diff --git a/code/nel/tools/3d/ligo/plugin_max/max_to_ligo.cpp b/code/nel/tools/3d/ligo/plugin_max/max_to_ligo.cpp
index 7de43f6b9..052eb04a0 100644
--- a/code/nel/tools/3d/ligo/plugin_max/max_to_ligo.cpp
+++ b/code/nel/tools/3d/ligo/plugin_max/max_to_ligo.cpp
@@ -139,7 +139,7 @@ bool CMaxToLigo::loadLigoConfigFile (CLigoConfig& config, Interface& it, bool di
 			try
 			{
 				// Load the config file
-				config.readConfigFile (sModulePath, false);
+				config.readConfigFile (tStrToUtf8(sModulePath), false);
 
 				// ok
 				return true;
diff --git a/code/nel/tools/3d/object_viewer/editable_range.h b/code/nel/tools/3d/object_viewer/editable_range.h
index 05e52857b..65c633352 100644
--- a/code/nel/tools/3d/object_viewer/editable_range.h
+++ b/code/nel/tools/3d/object_viewer/editable_range.h
@@ -317,7 +317,7 @@ inline void CEditableRangeT<float>::value2CString(float value, CString &dest)
 
 inline const TCHAR *CEditableRangeT<float>::string2value(const CString &value, float &result)
 {			
-	if (sscanf((LPCTSTR) value, "%f", &result) == 1)
+	if (NLMISC::fromString(tStrToUtf8(value), result))
 	{			
 		return NULL;
 	}
@@ -343,8 +343,8 @@ inline void CEditableRangeT<uint32>::value2CString(uint32 value, CString &dest)
 
 inline const TCHAR *CEditableRangeT<uint32>::string2value(const CString &value, uint32 &result)
 {			
-	uint32 tmp;
-	if (sscanf((LPCTSTR) value, "%d", &tmp) == 1)
+	sint32 tmp;
+	if (NLMISC::fromString(tStrToUtf8(value), tmp))
 	{
 		if (strchr((LPCTSTR) value, '-'))
 		{
@@ -379,8 +379,8 @@ inline void CEditableRangeT<sint32>::value2CString(sint32 value, CString &dest)
 
 inline const TCHAR *CEditableRangeT<sint32>::string2value(const CString &value, sint32 &result)
 {			
-	uint32 tmp;
-	if (sscanf((LPCTSTR) value, "%d", &tmp) == 1)
+	sint32 tmp;
+	if (NLMISC::fromString(tStrToUtf8(value), tmp))
 	{				
 		result = tmp;
 		return NULL;				
diff --git a/code/nel/tools/3d/object_viewer/located_target_dlg.cpp b/code/nel/tools/3d/object_viewer/located_target_dlg.cpp
index 7cb03426f..12c9de041 100644
--- a/code/nel/tools/3d/object_viewer/located_target_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/located_target_dlg.cpp
@@ -159,8 +159,8 @@ BOOL CLocatedTargetDlg::OnInitDialog()
 	// fill the box thta tells us what the target are
 	for(k = 0; k < nbTarg; ++k)
 	{
-		m_Targets.AddString(_LBTarget->getTarget(k)->getName().c_str() );
-		m_Targets.SetItemData(k, (DWORD) _LBTarget->getTarget(k) );
+		m_Targets.AddString(utf8ToTStr(_LBTarget->getTarget(k)->getName()));
+		m_Targets.SetItemData(k, (DWORD_PTR) _LBTarget->getTarget(k));
 		targetSet.insert(_LBTarget->getTarget(k));
 	};
 
@@ -179,8 +179,8 @@ BOOL CLocatedTargetDlg::OnInitDialog()
 		{
 			if (targetSet.find(loc) == targetSet.end())
 			{
-				int l = m_AvailableTargets.AddString(loc->getName().c_str() );				
-				m_AvailableTargets.SetItemData(l, (DWORD) loc );				
+				int l = m_AvailableTargets.AddString(utf8ToTStr(loc->getName()));
+				m_AvailableTargets.SetItemData(l, (DWORD_PTR) loc);
 			}
 		}
 	}
diff --git a/code/nel/tools/3d/object_viewer/mesh_dlg.cpp b/code/nel/tools/3d/object_viewer/mesh_dlg.cpp
index de59b9c2a..991ae09f3 100644
--- a/code/nel/tools/3d/object_viewer/mesh_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/mesh_dlg.cpp
@@ -162,7 +162,7 @@ void CMeshDlg::updateForMorph()
 		GetDlgItem(IDC_SHAPE_NAME)->EnableWindow(!enable);
 		if (!enable)
 		{
-			m_ShapeName = cm->getShape().c_str();
+			m_ShapeName = utf8ToTStr(cm->getShape());
 		}
 		else
 		{
diff --git a/code/nel/tools/3d/object_viewer/multi_tex_dlg.cpp b/code/nel/tools/3d/object_viewer/multi_tex_dlg.cpp
index fc0c294ca..58776b931 100644
--- a/code/nel/tools/3d/object_viewer/multi_tex_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/multi_tex_dlg.cpp
@@ -188,6 +188,7 @@ void CMultiTexDlg::readValues(bool alternate)
 		}
 	}
 
+	GetDlgItem(IDC_BUMP_FACTOR)->SetWindowText(utf8ToTStr(NLMISC::toString("%.3f", _MTP->getBumpFactor())));
 }
 
 
@@ -206,7 +207,6 @@ void CMultiTexDlg::writeValues(bool alternate)
 	TCHAR u1[10], u2[10], v1[10], v2[10];
 	NLMISC::CVector2f vs1, vs2;
 
-
 	if (!alternate)
 	{
 		GetDlgItem(IDC_U_SPEED_1)->GetWindowText(u1, 10);
diff --git a/code/nel/tools/3d/object_viewer/pick_sound.cpp b/code/nel/tools/3d/object_viewer/pick_sound.cpp
index 2f67147a8..0e6c175d0 100644
--- a/code/nel/tools/3d/object_viewer/pick_sound.cpp
+++ b/code/nel/tools/3d/object_viewer/pick_sound.cpp
@@ -159,7 +159,7 @@ void CPickSound::OnDblclkList()
 	stopCurrSource();
 	CString sName;
 	m_NameList.GetText(curSel, sName);
-	_CurrSource = CSoundSystem::create(std::string( (LPCTSTR) sName));	
+	_CurrSource = CSoundSystem::create(tStrToUtf8(sName));
 }
 
 //========================================================================================
diff --git a/code/nel/tools/3d/object_viewer/ps_mover_dlg.cpp b/code/nel/tools/3d/object_viewer/ps_mover_dlg.cpp
index a916cee6f..cdd88ea70 100644
--- a/code/nel/tools/3d/object_viewer/ps_mover_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/ps_mover_dlg.cpp
@@ -178,8 +178,8 @@ BOOL CPSMoverDlg::OnInitDialog()
 	{
 		if (dynamic_cast<NL3D::IPSMover *>(_EditedLocated->getBoundObject(k)))
 		{
-			uint insertedLine = m_SubComponentCtrl.AddString(_EditedLocated->getBoundObject(k)->getName().c_str());
-			m_SubComponentCtrl.SetItemData(insertedLine, (DWORD) _EditedLocated->getBoundObject(k));
+			uint insertedLine = m_SubComponentCtrl.AddString(utf8ToTStr(_EditedLocated->getBoundObject(k)->getName()));
+			m_SubComponentCtrl.SetItemData(insertedLine, (DWORD_PTR) _EditedLocated->getBoundObject(k));
 			++nbCandidates;			
 		}
 	}
diff --git a/code/nel/tools/3d/object_viewer/skeleton_scale_dlg.cpp b/code/nel/tools/3d/object_viewer/skeleton_scale_dlg.cpp
index a7d2b022a..42839e933 100644
--- a/code/nel/tools/3d/object_viewer/skeleton_scale_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/skeleton_scale_dlg.cpp
@@ -843,13 +843,13 @@ void CSkeletonScaleDlg::OnSsdButtonSaveas()
 		return;
 
 	// choose the file
-	CFileDialog fd(FALSE, "skel", _SkeletonFileName.c_str(), OFN_OVERWRITEPROMPT, "SkelFiles (*.skel)|*.skel|All Files (*.*)|*.*||", this) ;
-	fd.m_ofn.lpstrTitle= "Save As Skeleton";
+	CFileDialog fd(FALSE, _T("skel"), utf8ToTStr(_SkeletonFileName), OFN_OVERWRITEPROMPT, _T("SkelFiles (*.skel)|*.skel|All Files (*.*)|*.*||"), this) ;
+	fd.m_ofn.lpstrTitle = _T("Save As Skeleton");
 	if (fd.DoModal() == IDOK)
 	{
 		NLMISC::COFile	f;
 		
-		if( f.open((const char*)fd.GetPathName()) )
+		if( f.open(tStrToUtf8(fd.GetPathName())) )
 		{
 			if(saveCurrentInStream(f))
 			{
@@ -859,7 +859,7 @@ void CSkeletonScaleDlg::OnSsdButtonSaveas()
 			}
 
 			// bkup the valid fileName (new file edited)
-			_SkeletonFileName= (const char*)fd.GetPathName();
+			_SkeletonFileName= tStrToUtf8(fd.GetPathName());
 			_StaticFileName= _SkeletonFileName.c_str();
 			UpdateData(FALSE);
 		}
diff --git a/code/nel/tools/3d/object_viewer/vegetable_dlg.cpp b/code/nel/tools/3d/object_viewer/vegetable_dlg.cpp
index 7611b543b..09a2079e5 100644
--- a/code/nel/tools/3d/object_viewer/vegetable_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/vegetable_dlg.cpp
@@ -196,7 +196,7 @@ void				CVegetableDlg::updateCurSelVegetableName()
 		_Vegetables[id].updateVegetableName();
 		// replace name in the listBox: must delete, and re-insert
 		VegetableList.DeleteString(id);
-		VegetableList.InsertString(id, _Vegetables[id].VegetableName.c_str());
+		VegetableList.InsertString(id, utf8ToTStr(_Vegetables[id].VegetableName));
 		VegetableList.SetCurSel(id);
 	}
 }
@@ -349,14 +349,14 @@ bool		CVegetableDlg::loadVegetableSet(NL3D::CTileVegetableDesc &vegetSet, const
 		
 		ok= true;
 
-		if( f.open((const char*)fd.GetPathName()) )
+		if( f.open(tStrToUtf8(fd.GetPathName())))
 		{
 			try
 			{
 				// read the vegetable
 				f.serial(vegetSet);
 				// bkup fileName.
-				_LastVegetSetName= (const char*)fd.GetFileName();
+				_LastVegetSetName = tStrToUtf8(fd.GetFileName());
 			}
 			catch(const NLMISC::EStream &)
 			{
@@ -439,7 +439,7 @@ void		CVegetableDlg::appendVegetableSet(NL3D::CTileVegetableDesc &vegetSet)
 			_Vegetables[id].initVegetable(veget);
 
 			// update view
-			VegetableList.AddString(_Vegetables[id].VegetableName.c_str());
+			VegetableList.AddString(utf8ToTStr(_Vegetables[id].VegetableName));
 		}
 	}
 }
@@ -529,7 +529,7 @@ void CVegetableDlg::OnButtonVegetableAdd()
 	_Vegetables[id].initDefaultVegetable();
 
 	// update view
-	VegetableList.AddString(_Vegetables[id].VegetableName.c_str());
+	VegetableList.AddString(utf8ToTStr(_Vegetables[id].VegetableName));
 
 	// update 3D view
 	refreshVegetableDisplay();
@@ -559,7 +559,7 @@ void CVegetableDlg::OnButtonVegetableInsert()
 		_Vegetables[id].initDefaultVegetable();
 
 		// update view
-		VegetableList.InsertString(id, _Vegetables[id].VegetableName.c_str());
+		VegetableList.InsertString(id, utf8ToTStr(_Vegetables[id].VegetableName));
 
 		// update 3D view
 		refreshVegetableDisplay();
@@ -611,7 +611,7 @@ void CVegetableDlg::OnButtonVegetableLoadDesc()
 	{
 		NLMISC::CIFile	f;
 		
-		if( f.open((const char*)fd.GetPathName()) )
+		if( f.open(tStrToUtf8(fd.GetPathName())) )
 		{
 			NL3D::CVegetable	veget;
 			try
@@ -624,7 +624,7 @@ void CVegetableDlg::OnButtonVegetableLoadDesc()
 				_Vegetables[id].initVegetable(veget);
 
 				// update view
-				VegetableList.AddString(_Vegetables[id].VegetableName.c_str());
+				VegetableList.AddString(utf8ToTStr(_Vegetables[id].VegetableName));
 
 				// update 3D view
 				refreshVegetableDisplay();
@@ -651,13 +651,13 @@ void CVegetableDlg::OnButtonVegetableSaveDesc()
 
 		std::string		fileName= _Vegetables[id].VegetableName + ".vegetdesc";
 
-		CFileDialog fd(FALSE, "vegetdesc", fileName.c_str(), OFN_OVERWRITEPROMPT, "VegetDescFiles (*.vegetdesc)|*.vegetdesc|All Files (*.*)|*.*||", this) ;
-		fd.m_ofn.lpstrTitle= "Save Vegetable Descriptor";
+		CFileDialog fd(FALSE, _T("vegetdesc"), utf8ToTStr(fileName), OFN_OVERWRITEPROMPT, _T("VegetDescFiles (*.vegetdesc)|*.vegetdesc|All Files (*.*)|*.*||"), this) ;
+		fd.m_ofn.lpstrTitle = _T("Save Vegetable Descriptor");
 		if (fd.DoModal() == IDOK)
 		{
 			NLMISC::COFile	f;
 			
-			if( f.open((const char*)fd.GetPathName()) )
+			if( f.open(tStrToUtf8(fd.GetPathName())) )
 			{
 				try
 				{
@@ -722,13 +722,13 @@ void CVegetableDlg::OnButtonVegetableSaveSet()
 	buildVegetableSet(vegetSet);
 
 	// Then try to save it.
-	CFileDialog fd(FALSE, "vegetset", _LastVegetSetName.c_str(), OFN_OVERWRITEPROMPT, "VegetSetFiles (*.vegetset)|*.vegetset|All Files (*.*)|*.*||", this) ;
-	fd.m_ofn.lpstrTitle= "Save Vegetable Set";
+	CFileDialog fd(FALSE, _T("vegetset"), utf8ToTStr(_LastVegetSetName), OFN_OVERWRITEPROMPT, _T("VegetSetFiles (*.vegetset)|*.vegetset|All Files (*.*)|*.*||"), this) ;
+	fd.m_ofn.lpstrTitle = _T("Save Vegetable Set");
 	if (fd.DoModal() == IDOK)
 	{
 		NLMISC::COFile	f;
 		
-		if( f.open((const char*)fd.GetPathName()) )
+		if( f.open(tStrToUtf8(fd.GetPathName())) )
 		{
 			try
 			{
diff --git a/code/nel/tools/3d/object_viewer/vegetable_edit_tools.cpp b/code/nel/tools/3d/object_viewer/vegetable_edit_tools.cpp
index 8d791a0fe..b0508cca9 100644
--- a/code/nel/tools/3d/object_viewer/vegetable_edit_tools.cpp
+++ b/code/nel/tools/3d/object_viewer/vegetable_edit_tools.cpp
@@ -33,7 +33,7 @@ void	CDirectEditableRangeFloat::init(uint32 x, uint32 y, CWnd *pParent)
 
 	CRect	rect;
 	rect.SetRect(x, y+10, x+dx, y+25);
-	_StaticText.Create(_Title.c_str(), WS_CHILD | WS_VISIBLE, rect, pParent);
+	_StaticText.Create(utf8ToTStr(_Title), WS_CHILD | WS_VISIBLE, rect, pParent);
 	_StaticText.SetFont(pParent->GetFont());
 }
 
diff --git a/code/nel/tools/3d/object_viewer/vegetable_noise_value_dlg.cpp b/code/nel/tools/3d/object_viewer/vegetable_noise_value_dlg.cpp
index fb9bf1a1e..12bfe4050 100644
--- a/code/nel/tools/3d/object_viewer/vegetable_noise_value_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/vegetable_noise_value_dlg.cpp
@@ -154,7 +154,7 @@ BOOL CVegetableNoiseValueDlg::OnInitDialog()
 
 
 	// Set the name.
-	NoiseValueName.SetWindowText(_TitleName.c_str());
+	NoiseValueName.SetWindowText(utf8ToTStr(_TitleName));
 
 
 	// if previously setuped, setup now the noiseValue.
@@ -264,7 +264,5 @@ void CVegetableNoiseValueDlg::applyScaleSlider(sint scrollValue)
 	_RandValue->updateValueFromReader();
 
 	// update marker text
-	char	str[256];
-	sprintf(str, "%d%%", (sint)(factor*100));
-	StaticScaleMarker.SetWindowText(str);
+	StaticScaleMarker.SetWindowText(utf8ToTStr(NLMISC::toString("%d%%", (sint)(factor * 100))));
 }
diff --git a/code/nel/tools/3d/object_viewer/vegetable_select_dlg.cpp b/code/nel/tools/3d/object_viewer/vegetable_select_dlg.cpp
index 51b4cdc5e..d7be7bcb3 100644
--- a/code/nel/tools/3d/object_viewer/vegetable_select_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/vegetable_select_dlg.cpp
@@ -63,7 +63,7 @@ BOOL CVegetableSelectDlg::OnInitDialog()
 	uint	num= _VegetableDlg->getNumVegetables();
 	for(uint i=0; i<num; i++)
 	{
-		VegetableList.AddString(_VegetableDlg->getVegetableName(i).c_str());
+		VegetableList.AddString(utf8ToTStr(_VegetableDlg->getVegetableName(i)));
 	}
 	
 	return TRUE;  // return TRUE unless you set the focus to a control
diff --git a/code/nel/tools/3d/object_viewer/vegetable_wind_dlg.cpp b/code/nel/tools/3d/object_viewer/vegetable_wind_dlg.cpp
index 5c6657167..0b2084863 100644
--- a/code/nel/tools/3d/object_viewer/vegetable_wind_dlg.cpp
+++ b/code/nel/tools/3d/object_viewer/vegetable_wind_dlg.cpp
@@ -70,26 +70,22 @@ END_MESSAGE_MAP()
 void	CVegetableWindDlg::updateView()
 {
 	float	a;
-	char	str[256];
 
 	// update Power.
 	a= _ObjViewer->getVegetableWindPower();
-	sprintf(str, "%.2f", a);
-	StaticPower.SetWindowText(str);
+	StaticPower.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 	NLMISC::clamp(a, 0, NL_VEGETABLE_EDIT_WIND_MAX_POWER);
 	SliderPower.SetPos((sint)(a*NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE / NL_VEGETABLE_EDIT_WIND_MAX_POWER));
 
 	// update BendStart.
 	a= _ObjViewer->getVegetableWindBendStart();
-	sprintf(str, "%.2f", a);
-	StaticBendStart.SetWindowText(str);
+	StaticBendStart.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 	NLMISC::clamp(a, 0, NL_VEGETABLE_EDIT_WIND_MAX_BENDSTART);
 	SliderBendStart.SetPos((sint)(a*NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE / NL_VEGETABLE_EDIT_WIND_MAX_BENDSTART));
 
 	// update Frequency.
 	a= _ObjViewer->getVegetableWindFrequency();
-	sprintf(str, "%.2f", a);
-	StaticFrequency.SetWindowText(str);
+	StaticFrequency.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 	NLMISC::clamp(a, 0, NL_VEGETABLE_EDIT_WIND_MAX_FREQUENCY);
 	SliderFrequency.SetPos((sint)(a*NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE / NL_VEGETABLE_EDIT_WIND_MAX_FREQUENCY));
 
@@ -129,28 +125,24 @@ void CVegetableWindDlg::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBa
 		&& nSBCode==SB_THUMBPOSITION || nSBCode==SB_THUMBTRACK)
 	{
 		float	a;
-		char	str[256];
 		if(sliderCtrl == &SliderPower)
 		{
 			a= (float)nPos * NL_VEGETABLE_EDIT_WIND_MAX_POWER / NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE;
 			_ObjViewer->setVegetableWindPower(a);
-			sprintf(str, "%.2f", a);
-			StaticPower.SetWindowText(str);
+			StaticPower.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 		}
 		else if(sliderCtrl == &SliderBendStart)
 		{
 			a= (float)nPos * NL_VEGETABLE_EDIT_WIND_MAX_BENDSTART / NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE;
 			_ObjViewer->setVegetableWindBendStart(a);
-			sprintf(str, "%.2f", a);
-			StaticBendStart.SetWindowText(str);
+			StaticBendStart.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 		}
 		else if(sliderCtrl == &SliderFrequency)
 		{
 		
 			a= (float)nPos * NL_VEGETABLE_EDIT_WIND_MAX_FREQUENCY / NL_VEGETABLE_EDIT_WIND_SLIDER_RANGE;
 			_ObjViewer->setVegetableWindFrequency(a);
-			sprintf(str, "%.2f", a);
-			StaticFrequency.SetWindowText(str);
+			StaticFrequency.SetWindowText(utf8ToTStr(NLMISC::toString("%.2f", a)));
 		}
 	}
 	else
diff --git a/code/nel/tools/3d/object_viewer/water_pool_editor.cpp b/code/nel/tools/3d/object_viewer/water_pool_editor.cpp
index 3b68ae0e5..bf6f461bf 100644
--- a/code/nel/tools/3d/object_viewer/water_pool_editor.cpp
+++ b/code/nel/tools/3d/object_viewer/water_pool_editor.cpp
@@ -165,9 +165,8 @@ BOOL CWaterPoolEditor::OnInitDialog()
 
 int CWaterPoolEditor::addPool(uint32 ID)
 {
-	char poolId[128];
-	sprintf(poolId, "%d (%s)", ID, _Wpm->getPoolByID(ID).getName().c_str());
-	int index = m_PoolList.AddString(poolId);
+	std::string poolId = NLMISC::toString("%d (%s)", ID, _Wpm->getPoolByID(ID).getName().c_str());
+	int index = m_PoolList.AddString(utf8ToTStr(poolId));
 	nlassert(index != LB_ERR);
 	m_PoolList.SetItemData(index, ID);
 	return index;
@@ -358,7 +357,7 @@ void CWaterPoolEditor::OnLoadPool()
 		{
 			NLMISC::CIXml iXml;
 			NLMISC::CIFile iF;
-			if (iF.open((LPCTSTR) fileDlg.GetPathName()))
+			if (iF.open(tStrToUtf8(fileDlg.GetPathName())))
 			{
 				if (iXml.init (iF))
 				{
@@ -370,17 +369,17 @@ void CWaterPoolEditor::OnLoadPool()
 				else
 				{
 					iF.close();
-					MessageBox (("Unable to init xml stream from file : " + std::string((LPCTSTR) fileDlg.GetPathName())).c_str(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);	
+					MessageBox (utf8ToTStr(NLMISC::toString("Unable to init xml stream from file: %s", tStrToUtf8(fileDlg.GetPathName()).c_str())), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 				}
 			}
 			else
 			{
-				MessageBox (("Unable to open file : " + std::string((LPCTSTR) fileDlg.GetPathName())).c_str(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);
+				MessageBox (utf8ToTStr(NLMISC::toString("Unable to open file: %s", tStrToUtf8(fileDlg.GetPathName()).c_str())), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 			}
 		}
 		catch (const NLMISC::Exception& e)
 		{
-			MessageBox (e.what(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);
+			MessageBox (utf8ToTStr(e.what()), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 		}
 	}	
 }
@@ -396,7 +395,7 @@ void CWaterPoolEditor::OnSavePool()
 		{
 			NLMISC::COXml oXml;
 			NLMISC::COFile oF;
-			if (oF.open((LPCTSTR) fileDlg.GetPathName()))
+			if (oF.open(tStrToUtf8(fileDlg.GetPathName())))
 			{
 				if (oXml.init (&oF))
 				{
@@ -407,17 +406,17 @@ void CWaterPoolEditor::OnSavePool()
 				else
 				{
 					oF.close();
-					MessageBox (("Unable to init xml stream from file : " + std::string((LPCTSTR) fileDlg.GetPathName())).c_str(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);	
+					MessageBox (utf8ToTStr(NLMISC::toString("Unable to init xml stream from file: %s", tStrToUtf8(fileDlg.GetPathName()).c_str())), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 				}
 			}
 			else
 			{
-				MessageBox (("Unable to open file : " + std::string((LPCTSTR) fileDlg.GetPathName())).c_str(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);
+				MessageBox (utf8ToTStr(NLMISC::toString("Unable to open file: %s", tStrToUtf8(fileDlg.GetPathName()).c_str())), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 			}
 		}
 		catch (const NLMISC::Exception& e)
 		{
-			MessageBox (e.what(), "NeL object viewer", MB_OK|MB_ICONEXCLAMATION);
+			MessageBox (utf8ToTStr(e.what()), _T("NeL object viewer"), MB_OK|MB_ICONEXCLAMATION);
 		}
 	}
 	
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export.cpp
index 3a4722063..71bc61d0e 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export.cpp
@@ -325,14 +325,14 @@ static INT_PTR CALLBACK CNelExportDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LP
 
 						// Name of the node
 						char sNodeMsg[256];
-						nlwarning (sNodeMsg, "Save %s model...", pNode->GetName());
+						nlwarning (sNodeMsg, "Save %s model...", tStrToUtf8(pNode->GetName()).c_str());
 
 						// It is a zone ?
 						if (RPO::isZone (*pNode, time))
 						{
 							// Save path
 							char sSavePath[256];
-							strcpy (sSavePath, pNode->GetName());
+							strcpy (sSavePath, tStrToUtf8(pNode->GetName()).c_str());
 
 							// Choose a file to export
 							if (!CExportNel::getScriptAppData (pNode, NEL3D_APPDATA_DONTEXPORT, 0))
@@ -342,24 +342,22 @@ static INT_PTR CALLBACK CNelExportDlgProc(HWND hWnd, UINT msg, WPARAM wParam, LP
 								if (!theCNelExport.exportZone (sSavePath, *pNode, time))
 								{
 									// Error message
-									char sErrorMsg[512];
-									sprintf (sErrorMsg, "Error exporting the zone %s in the file\n%s", pNode->GetName(), sSavePath);
-									MessageBox (hWnd, sErrorMsg, "NeL export", MB_OK|MB_ICONEXCLAMATION);
+									std::string sErrorMsg = toString("Error exporting the zone %s in the file\n%s", tStrToUtf8(pNode->GetName()).c_str(), sSavePath);
+									MessageBox (hWnd, utf8ToTStr(sErrorMsg), L"NeL export", MB_OK|MB_ICONEXCLAMATION);
 								}
 							}
 						}
 						else if (CExportNel::isVegetable (*pNode, time))
 						{
 							// Save path
-							char sSavePath[256];
-							strcpy (sSavePath, pNode->GetName());
+							std::string sSavePath = tStrToUtf8(pNode->GetName());
 
 							// Choose a file to export
 							if (!CExportNel::getScriptAppData (pNode, NEL3D_APPDATA_DONTEXPORT, 0))
-							if (theCNelExport.SelectFileForSave(hWnd, sNodeMsg, vegetableFilter, sSavePath))
+							if (theCNelExport.SelectFileForSave(hWnd, sNodeMsg, vegetableFilter, sSavePath.c_str()))
 							{
 								// Export the mesh
-								if (!theCNelExport.exportVegetable (sSavePath, *pNode, time))
+								if (!theCNelExport.exportVegetable (sSavePath.c_str(), *pNode, time))
 								{
 									// Error message
 									char sErrorMsg[512];
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export_export.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export_export.cpp
index b26464f3a..4fbdde584 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export_export.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export_export.cpp
@@ -99,7 +99,7 @@ bool CNelExport::exportMesh (const char *sPath, INode& node, TimeValue time)
 			{
 				// Open a file
 				COFile file;
-				if (file.open(tempFileName))
+				if (file.open(tStrToUtf8(tempFileName)))
 				{
 					try
 					{
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
index 0eeebfa52..e7a82c878 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export_node_properties.cpp
@@ -2338,24 +2338,24 @@ INT_PTR CALLBACK MiscDialogCallback (
 							currentParam->LigoSymmetry = SendMessage (GetDlgItem (hwndDlg, IDC_LIGO_SYMMETRY), BM_GETCHECK, 0, 0);
 							TCHAR tmp[512];
 							GetWindowText (GetDlgItem (hwndDlg, IDC_LIGO_ROTATE), tmp, 512);
-							currentParam->LigoRotate = tmp;
+							currentParam->LigoRotate = tStrToUtf8(tmp);
 
 							// SWT
 							currentParam->SWT = SendMessage (GetDlgItem (hwndDlg, IDC_SWT), BM_GETCHECK, 0, 0);
 							GetWindowText (GetDlgItem (hwndDlg, IDC_SWT_WEIGHT), tmp, 512);
-							currentParam->SWTWeight = tmp;
+							currentParam->SWTWeight = tStrToUtf8(tmp);
 
 							// Radial normals
 							for (uint smoothGroup=0; smoothGroup<NEL3D_RADIAL_NORMAL_COUNT; smoothGroup++)
 							{
 								HWND edit = GetDlgItem (hwndDlg, IDC_RADIAL_NORMAL_29+smoothGroup);
 								GetWindowText (edit, tmp, 512);
-								currentParam->RadialNormals[smoothGroup]=tmp;
+								currentParam->RadialNormals[smoothGroup] = tStrToUtf8(tmp);
 							}
 
 							// mesh interfaces
 							GetWindowText (GetDlgItem (hwndDlg, IDC_EDIT_INTERFACE_FILE), tmp, 512);
-							currentParam->InterfaceFileName=tmp;
+							currentParam->InterfaceFileName = tStrToUtf8(tmp);
 							GetWindowText (GetDlgItem (hwndDlg, IDC_EDIT_INTERFACE_THRESHOLD), tmp, 512);
 							if (strlen(tmp) != 0)
 								currentParam->InterfaceThreshold = toFloatMax(tmp);							
@@ -2365,7 +2365,7 @@ INT_PTR CALLBACK MiscDialogCallback (
 							// Skeleton Scale
 							currentParam->ExportBoneScale= SendMessage( GetDlgItem(hwndDlg, IDC_EXPORT_BONE_SCALE), BM_GETCHECK, 0, 0);
 							GetWindowText (GetDlgItem (hwndDlg, IDC_EXPORT_BONE_SCALE_NAME_EXT), tmp, 512);
-							currentParam->ExportBoneScaleNameExt = wideToUtf8(tmp);
+							currentParam->ExportBoneScaleNameExt = tStrToUtf8(tmp);
 
 							// remanence
 							currentParam->UseRemanence = SendMessage (GetDlgItem (hwndDlg, IDC_USE_REMANENCE), BM_GETCHECK, 0, 0);
@@ -2373,7 +2373,7 @@ INT_PTR CALLBACK MiscDialogCallback (
 
 							GetWindowText (GetDlgItem (hwndDlg, IDC_REMANENCE_SLICE_NUMBER), tmp, 512);
 							uint rsn;
-							if (sscanf(tmp, "%d", &rsn) == 1)
+							if (NLMISC::fromString(tStrToUtf8(tmp), rsn))
 							{
 								currentParam->RemanenceSliceNumber = rsn;
 							}
diff --git a/code/nel/tools/3d/plugin_max/nel_export/nel_export_view.cpp b/code/nel/tools/3d/plugin_max/nel_export/nel_export_view.cpp
index 6a0587a22..3461f0e46 100644
--- a/code/nel/tools/3d/plugin_max/nel_export/nel_export_view.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_export/nel_export_view.cpp
@@ -367,7 +367,7 @@ void CNelExport::viewMesh (TimeValue time)
 			INode* pNode=_Ip->GetSelNode (nNode);
 
 			string sTmp = "Object Name: ";
-			sTmp += pNode->GetName();
+			sTmp += tStrToUtf8(pNode->GetName());
 			ProgBar.setLine (0, sTmp);
 			sTmp.clear();
 			for (uint32 i = 1; i < 10; ++i) 
@@ -412,7 +412,7 @@ void CNelExport::viewMesh (TimeValue time)
 						if (pShape)
 						{
 							// Add the shape in the view
-							uint instance = view->addMesh (pShape, pNode->GetName(), iteSkelShape->second.SkeletonInstance);
+							uint instance = view->addMesh (pShape, tStrToUtf8(pNode->GetName()).c_str(), iteSkelShape->second.SkeletonInstance);
 
 							// Add tracks
 							CAnimation *anim=new CAnimation;
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm.cpp
index ef84390a1..21d63b626 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm.cpp
@@ -128,7 +128,7 @@ void SLightBuild::convertFromMaxLight (INode *node,TimeValue tvTime)
 	if (maxLight->EvalLightState(tvTime, valid, &ls)!=REF_SUCCEED)
 		return;
 
-	this->Name = node->GetName();
+	this->Name = tStrToUtf8(node->GetName());
 
 	// Retrieve the correct light Group Name
 	this->AnimatedLight = CExportNel::getAnimatedLight (node);
@@ -295,7 +295,7 @@ void SLightBuild::convertFromMaxLight (INode *node,TimeValue tvTime)
 		INode *exclNode = exclusionList[i];
 		if (exclNode) // Crashfix // FIXME: Why is this NULL?
 		{
-			string tmp = exclNode->GetName();
+			string tmp = tStrToUtf8(exclNode->GetName());
 			this->setExclusion.insert(tmp);
 		}
 	}
@@ -1930,7 +1930,7 @@ void supprLightNoInteractOne( vector<SLightBuild> &vLights, CMesh::CMeshBuild* p
 	{
 		bool bInteract = false;
 
-		if( vLights[i].setExclusion.find( node.GetName() ) != vLights[i].setExclusion.end() )
+		if( vLights[i].setExclusion.find(tStrToUtf8(node.GetName()) ) != vLights[i].setExclusion.end() )
 		{
 			bInteract = false;
 		}
@@ -2005,7 +2005,7 @@ void CExportNel::deleteLM(INode& ZeNode)
 		string sSaveName;
 		sSaveName = _Options.sExportLighting;
 		if( sSaveName[sSaveName.size()-1] != '\\' ) sSaveName += "\\";
-		sSaveName += ZeNode.GetName();
+		sSaveName += tStrToUtf8(ZeNode.GetName());
 		char tmp[32];
 		sprintf( tmp, "%d", i );
 		sSaveName += tmp;
@@ -2276,7 +2276,7 @@ bool CExportNel::calculateLM( CMesh::CMeshBuild *pZeMeshBuild, CMeshBase::CMeshB
 		{
 			string thetext;
 			thetext = "Warning ";
-			thetext += ZeNode.GetName();
+			thetext += tStrToUtf8(ZeNode.GetName());
 			thetext = "have all faces NOT mapped (UV2)";
 			if (gOptions.FeedBack != NULL)
 			{
@@ -2325,11 +2325,11 @@ bool CExportNel::calculateLM( CMesh::CMeshBuild *pZeMeshBuild, CMeshBase::CMeshB
 				{
 					// Make an error message
 					string sTmp = "Warning : ";
-					sTmp += ZeNode.GetName();
+					sTmp += tStrToUtf8(ZeNode.GetName());
 					sTmp += " has mapping problem";
 
 					// Script trace
-					mprintf ((sTmp+"\n").c_str());
+					mprintf (utf8ToTStr((sTmp+"\n")));
 
 					// Feedback is here ?
 					if (gOptions.FeedBack != NULL)
@@ -2525,12 +2525,12 @@ bool CExportNel::calculateLM( CMesh::CMeshBuild *pZeMeshBuild, CMeshBase::CMeshB
 			
 		// Get the name of the max project
 		char projectName[512];
-		_splitpath (_Ip->GetCurFileName(), NULL, NULL, projectName, NULL);
+		_wsplitpath (_Ip->GetCurFileName(), NULL, NULL, utf8ToTStr(projectName), NULL);
 
 		// Add lightmap information in the lightmap log
 		COFile outputLog;
 		if (outputLightmapLog)
-			createLightmapLog (outputLog, gOptions.sExportLighting.c_str(), projectName, ZeNode.GetName());
+			createLightmapLog (outputLog, gOptions.sExportLighting.c_str(), projectName, tStrToUtf8(ZeNode.GetName()).c_str());
 
 		// Update UV coords to Texture space
 		PutFaceUV1InTextureCoord( LightMap.w, LightMap.h, AllFaces.begin(), AllFaces.size() );
@@ -2559,7 +2559,7 @@ bool CExportNel::calculateLM( CMesh::CMeshBuild *pZeMeshBuild, CMeshBase::CMeshB
 			{
 				CTextureFile *pLightMap = new CTextureFile();
 				//string sSaveName = AllMeshBuilds[nNode].second->GetName();
-				string sSaveName = ZeNode.GetName();
+				string sSaveName = tStrToUtf8(ZeNode.GetName());
 				char tmp[32];
 				sSaveName += "_";
 				sprintf( tmp, "%d", nLightMapNb );
@@ -2632,9 +2632,8 @@ bool CExportNel::calculateLM( CMesh::CMeshBuild *pZeMeshBuild, CMeshBase::CMeshB
 				{
 					if (gOptions.FeedBack != NULL)
 					{
-						char message[512];
-						sprintf (message, "Can't write the file %s : %s", sSaveName, e.what());
-						mprintf (message);
+						std::string message = toString("Can't write the file %s : %s", sSaveName.c_str(), e.what());
+						mprintf (utf8ToTStr(message));
 					}
 				}
 
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm_rt.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm_rt.cpp
index a0e6139b2..789c37b23 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm_rt.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/calc_lm_rt.cpp
@@ -113,7 +113,7 @@ void CRTWorld::build (vector<SLightBuild> &AllLights, CVector &trans, bool bExcl
 				pLAP->create( 64 ); // width of each grid in number of square
 				for( j = 0; j < vMB.size(); ++j )
 				{
-					if (rLight.setExclusion.find (vINode[j]->GetName()) != rLight.setExclusion.end()) 
+					if (rLight.setExclusion.find (tStrToUtf8(vINode[j]->GetName())) != rLight.setExclusion.end())
 						continue;
 					
 					for (k = 0; k < vMB[j]->Faces.size(); ++k)
@@ -142,7 +142,7 @@ void CRTWorld::build (vector<SLightBuild> &AllLights, CVector &trans, bool bExcl
 				pLAD->create (64, rLight.rDirRadius/64.0f, rLight.Direction);
 				for( j = 0; j < vMB.size(); ++j )
 				{
-					if (rLight.setExclusion.find (vINode[j]->GetName()) != rLight.setExclusion.end())
+					if (rLight.setExclusion.find (tStrToUtf8(vINode[j]->GetName())) != rLight.setExclusion.end())
 						continue;
 					
 					for (k = 0; k < vMB[j]->Faces.size(); ++k)
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_anim.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_anim.cpp
index 1416d287f..30389d809 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_anim.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_anim.cpp
@@ -605,7 +605,7 @@ void CExportNel::addMorphTracks (NL3D::CAnimation& animation, INode& node, const
 		if (pNode == NULL)
 			continue;
 		std::string name = parentName;
-		name += pNode->GetName();
+		name += tStrToUtf8(pNode->GetName());
 		name += "MorphFactor";
 		
 		IParamBlock *pb = (IParamBlock*)(pMorphMod->SubAnim (i+1));
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_collision.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_collision.cpp
index d7db650cb..d9657cd68 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_collision.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_collision.cpp
@@ -73,7 +73,7 @@ CCollisionMeshBuild*	CExportNel::createCollisionMeshBuild(std::vector<INode *> &
 				{
 					// get the mesh name
 					uint	meshId = rootMeshNames.size();
-					rootMeshNames.push_back(nodes[node]->GetName());
+					rootMeshNames.push_back(tStrToUtf8(nodes[node]->GetName()));
 					bool	collision = getScriptAppData (nodes[node], NEL3D_APPDATA_COLLISION, 0) != 0;
 					bool	exterior = getScriptAppData (nodes[node], NEL3D_APPDATA_COLLISION_EXTERIOR, 0) != 0;
 
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_material.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_material.cpp
index afe64907b..d39d00cf7 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_material.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_material.cpp
@@ -1271,7 +1271,7 @@ ITexture* CExportNel::buildATexture (Texmap& texmap, CMaterialDesc &remap3dsTexC
 		else // standard texture
 		{
 			srcTex = new CTextureFile;
-			std::string mapName = pBitmap->GetMapName();
+			std::string mapName = tStrToUtf8(pBitmap->GetMapName());
 			static_cast<CTextureFile *>(srcTex)->setFileName (ConvertTexFileName(mapName, _AbsolutePath));
 		}
 
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh.cpp
index 0a0d8c522..5f8fd2811 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh.cpp
@@ -266,7 +266,7 @@ NL3D::IShape *CExportNel::buildShape (INode& node, TimeValue time, const TInodeP
 							std::string nodeName=getScriptAppData (&node, NEL3D_APPDATA_LOD_NAME+lod, "");
 
 							// Get the node
-							INode *lodNode=_Ip->GetINodeByName(nodeName.c_str());
+							INode *lodNode=_Ip->GetINodeByName(utf8ToTStr(nodeName));
 							if (lodNode)
 							{
 								// Index of the lod in the build structure
@@ -611,7 +611,7 @@ void CExportNel::buildBaseMeshInterface (NL3D::CMeshBase::CMeshBaseBuild& buildM
 			continue;
 		// get factor here !
 		buildMesh.DefaultBSFactors.push_back(0.0f);
-		std::string sTemp = pNode->GetName();
+		std::string sTemp = tStrToUtf8(pNode->GetName());
 		buildMesh.BSNames.push_back (sTemp);
 	}
 
@@ -1063,9 +1063,8 @@ void CExportNel::buildMeshInterface (TriObject &tri, CMesh::CMeshBuild& buildMes
 		// Error code ?
 		if (error!=NoError)
 		{
-			char msg[512];
-			sprintf (msg, "%s skin: %s", getName (node).c_str(), ErrorMessage[error]);
-			MessageBox (NULL, msg, "NeL export", MB_OK|MB_ICONEXCLAMATION);
+			std::string msg = toString("%s skin: %s", getName (node).c_str(), ErrorMessage[error]);
+			MessageBoxW (NULL, utf8ToTStr(msg), L"NeL export", MB_OK|MB_ICONEXCLAMATION);
 		}
 		else
 		{
@@ -1493,7 +1492,7 @@ void CExportNel::buildMeshMorph (CMesh::CMeshBuild& buildMesh, INode &node, Time
 			continue;
 		}
 
-		bs.Name = pNode->GetName();
+		bs.Name = tStrToUtf8(pNode->GetName());
 
 		bool bIsDeltaPos = false;
 		bs.deltaPos.resize (nNbVertVB, CVector::Null);
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh_interface.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh_interface.cpp
index 899c28a28..0a2e95242 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh_interface.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_mesh_interface.cpp
@@ -316,7 +316,7 @@ static void AddNodeToQuadGrid(const NLMISC::CAABBox &delimiter, TNodeFaceQG &des
 	{
 		if (delimiter.intersect(nodeBBox))
 		{
-			nldebug((std::string("Adding ") + node.GetName() + std::string(" to mesh interface quad grid")).c_str());
+			nldebug("Adding %s to mesh interface quad grid", tStrToUtf8(node.GetName()).c_str());
 			// add this node tris
 			ObjectState os = node.EvalWorldState(time);
 			Object *obj = os.obj;	
@@ -581,7 +581,7 @@ static bool BuildMeshInterfaces(const char *cMaxFileName, std::vector<CMeshInter
 		string newName = "NelAutoMergeRenamedTmp" + toString (i);
 		string originalName = (*lib)[i]->GetName ();
 		renameMap.insert (map<string, string>::value_type (newName, originalName));
-		(*lib)[i]->SetName (newName.c_str ());
+		(*lib)[i]->SetName (utf8ToTStr(newName));
 	}
 
 	// Merge the interface project
@@ -614,7 +614,7 @@ static bool BuildMeshInterfaces(const char *cMaxFileName, std::vector<CMeshInter
 			string newName = "NelAutoMergeRenamed" + toString (i);
 			string originalName = (*lib)[i]->GetName ();
 			renameMap.insert (map<string, string>::value_type (newName, originalName));
-			(*lib)[i]->SetName (newName.c_str ());
+			(*lib)[i]->SetName (utf8ToTStr(newName));
 		}
 	}
 
@@ -627,7 +627,7 @@ static bool BuildMeshInterfaces(const char *cMaxFileName, std::vector<CMeshInter
 		if (ite != renameMap.end ())
 		{
 			// Rename the material with its original name
-			(*lib)[i]->SetName (ite->second.c_str ());
+			(*lib)[i]->SetName (utf8ToTStr(ite->second));
 		}
 	}
 
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
index a745970eb..87bc96be6 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_misc.cpp
@@ -265,7 +265,7 @@ Control* CExportNel::getControlerByName (Animatable& node, const char* sName)
 			ParamDef& paramDef=param->GetParamDef(id);
 
 			// Good name?
-			if (strcmp (paramDef.int_name, sName)==0)
+			if (strcmp (tStrToUtf8(paramDef.int_name).c_str(), sName)==0)
 			{
 				// ok, return this subanim
 #if MAX_VERSION_MAJOR >= 14
@@ -332,7 +332,7 @@ bool getValueByNameUsingParamBlock2Internal (Animatable& node, const char* sName
 			ParamDef& paramDef=param->GetParamDef(id);
 
 			// Good name?
-			if (strcmp (paramDef.int_name, sName)==0)
+			if (strcmp (tStrToUtf8(paramDef.int_name).c_str(), sName)==0)
 			{
 				// Check this value is good type
 				ParamType2 paramType = param->GetParameterType(id);
@@ -372,7 +372,7 @@ bool getValueByNameUsingParamBlock2Internal (Animatable& node, const char* sName
 						break;
 						case TYPE_FILENAME:
 						case TYPE_STRING:
-							*(std::string*)pValue = param->GetStr (id, tvTime);
+							*(std::string*)pValue = tStrToUtf8(param->GetStr (id, tvTime));
 							bRes = TRUE;
 						break;
 						case TYPE_FILENAME_TAB:
@@ -382,7 +382,7 @@ bool getValueByNameUsingParamBlock2Internal (Animatable& node, const char* sName
 							uint total = param->Count (id);
 							rTab.resize(total);
 							for( uint i = 0; i < total; ++i )
-								rTab[i] = param->GetStr (id, tvTime, i);
+								rTab[i] = tStrToUtf8(param->GetStr (id, tvTime, i));
 							bRes = TRUE;
 						}
 						break;
@@ -511,8 +511,8 @@ std::string	CExportNel::getName (MtlBase& mtl)
 std::string	CExportNel::getName(INode& node)
 {
 	// Return its name
-	MCHAR* name = node.GetName();
-	return std::string(name);
+	const MCHAR* name = node.GetName();
+	return tStrToUtf8(name);
 }
 
 // --------------------------------------------------
@@ -549,7 +549,7 @@ std::string		CExportNel::getNelObjectName (INode& node)
 		}
 		else
 		{
-			return node.GetName();
+			return tStrToUtf8(node.GetName());
 		}
 	}
 	else
@@ -571,19 +571,19 @@ std::string		CExportNel::getNelObjectName (INode& node)
 				}
 				else
 				{
-					return node.GetName();
+					return tStrToUtf8(node.GetName());
 				}
 			}
 			else
 			{
 				// Extract the node name
-				return node.GetName();
+				return tStrToUtf8(node.GetName());
 			}
 		}
 		else
 		{		
 			// Extract the node name
-			return node.GetName();
+			return tStrToUtf8(node.GetName());
 		}
 	}
 }
@@ -763,17 +763,17 @@ bool CExportNel::hasLightMap (INode& node, TimeValue time)
 
 // --------------------------------------------------
 
-void CExportNel::outputErrorMessage (const char *message)
+void CExportNel::outputErrorMessage(const std::string &message)
 {
 	if (_ErrorInDialog)
 	{
-		MessageBox (_Ip->GetMAXHWnd(), message, _ErrorTitle.c_str(), MB_OK|MB_ICONEXCLAMATION);
+		MessageBoxW (_Ip->GetMAXHWnd(), utf8ToTStr(message), utf8ToTStr(_ErrorTitle), MB_OK|MB_ICONEXCLAMATION);
 	}
-	mprintf (message);
-	mprintf ("\n");
+	mprintf (utf8ToTStr(message));
+	mprintf (_T("\n"));
 
 	nlwarning ("Error in max file %s : ", _Ip->GetCurFilePath());
-	nlwarning (message);
+	nlwarning (message.c_str());
 }
 
 // --------------------------------------------------
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_nel.h b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_nel.h
index 7421fad49..d9d8b6189 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_nel.h
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_nel.h
@@ -667,8 +667,8 @@ public:
 	static void						setScriptAppData (Animatable *node, uint32 id, NLMISC::CRGBA val);
 	
 	// Output error message
-	void							outputErrorMessage (const char *message);
-	void							outputWarningMessage (const char *message);
+	void							outputErrorMessage (const std::string &message);
+	void							outputWarningMessage(const std::string &message);
 
 
 	// Get an appData VertexProgram WindTree (ensure same default values for all retrieve).
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_particle_system.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_particle_system.cpp
index b84eb738e..4b17b17d3 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_particle_system.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_particle_system.cpp
@@ -51,7 +51,7 @@ IShape* CExportNel::buildParticleSystem(INode& node, TimeValue time)
 			iF.serial(ss);
 			if (!dynamic_cast<CParticleSystemShape *>(ss.getShapePointer()))
 			{
-				mprintf("Error : Object shape %s isn't a particle system", shapeName.c_str());
+				mprintf(_T("Error : Object shape %s isn't a particle system"), utf8ToTStr(shapeName));
 				return NULL;
 			}
 
@@ -78,7 +78,7 @@ IShape* CExportNel::buildParticleSystem(INode& node, TimeValue time)
 		}
 		else
 		{
-			mprintf("Error : Can't find %s while exporting a particle system \n", shapeName.c_str());
+			mprintf(_T("Error : Can't find %s while exporting a particle system \n"), utf8ToTStr(shapeName));
 			return NULL;
 		}				
 	}
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_radial_normal.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_radial_normal.cpp
index 541c0c152..d623b7269 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_radial_normal.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_radial_normal.cpp
@@ -62,7 +62,7 @@ void CRadialVertices::init (INode *node, Mesh *mesh, TimeValue time, Interface &
 			_SmoothingGroupMask |= (1<<app);
 
 			// Get the node by name
-			INode *pivotNode = ip.GetINodeByName(pivotName.c_str());
+			INode *pivotNode = ip.GetINodeByName(utf8ToTStr(pivotName));
 			if (pivotNode)
 			{
 				// Get the world Pivot point
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_scene.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_scene.cpp
index 21f557562..5d9caef86 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_scene.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_scene.cpp
@@ -93,7 +93,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 			resultInstanceNode[nNumIG] = pNode;
 			if (aIGArray[nNumIG].InstanceName == "") // no instance name was set, takes the node name instead
 			{
-				aIGArray[nNumIG].InstanceName = pNode->GetName();
+				aIGArray[nNumIG].InstanceName = tStrToUtf8(pNode->GetName());
 			}
 
 			// Visible? always true, but if special flag for camera collision
@@ -236,10 +236,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 											 pMB->Vertices[pMB->Faces[j].Corner[2].Vertex]) )
 				{
 					// ERROR : The volume is not convex !!!
-					char tam[256];
-					sprintf(tam,"ERROR: The cluster %s is not convex.",vectNode[i]->GetName());
-					//MessageBox(NULL,tam,"Error",MB_OK|MB_ICONERROR);
-					nlwarning(tam);
+					nlwarning("ERROR: The cluster %s is not convex.", tStrToUtf8(vectNode[i]->GetName()).c_str());
 				}
 			}
 
@@ -247,7 +244,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 			clusterTemp.VisibleFromFather = bVisibleFromFather;
 			clusterTemp.FatherAudible = bFatherAudible;
 			clusterTemp.AudibleFromFather = bAudibleFromFather;
-			clusterTemp.Name = pNode->GetName();
+			clusterTemp.Name = tStrToUtf8(pNode->GetName());
 
 			vClusters.push_back (clusterTemp);
 			delete pMB; pMB = NULL;
@@ -336,10 +333,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 			if (!portalTemp.setPoly (polyv))
 			{
 				// ERROR : Poly not convex, or set of vertices not plane
-				char tam[256];
-				sprintf(tam,"ERROR: The portal %s is not convex.",vectNode[i]->GetName());
-				//MessageBox(NULL,tam,"Error",MB_OK|MB_ICONERROR);
-				nlwarning(tam);
+				nlwarning("ERROR: The portal %s is not convex.", tStrToUtf8(vectNode[i]->GetName()).c_str());
 			}
 
 			if (nAccelType&16) // is dynamic portal ?
@@ -348,7 +342,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 				if (!InstanceName.empty())
 					portalTemp.setName (InstanceName);
 				else
-					portalTemp.setName (string(pNode->GetName()));
+					portalTemp.setName (tStrToUtf8(pNode->GetName()));
 			}
 
 			// Check if portal has 2 cluster
@@ -368,10 +362,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 			if (nNbCluster != 2)
 			{
 				// ERROR
-				char tam[256];
-				sprintf(tam,"ERROR: The portal %s has not 2 clusters but %d",vectNode[i]->GetName(), nNbCluster);
-				//MessageBox(NULL,tam,"Error",MB_OK|MB_ICONERROR);
-				nlwarning(tam);
+				nlwarning("ERROR: The portal %s has not 2 clusters but %d", tStrToUtf8(vectNode[i]->GetName()).c_str(), nNbCluster);
 			}
 
 
@@ -513,10 +504,7 @@ CInstanceGroup*	CExportNel::buildInstanceGroup(const vector<INode*>& vectNode, v
 				if (vClusters.size() > 0)
 				if (aIGArray[nNumIG].Clusters.size() == 0)
 				{
-					char tam[256];
-					sprintf(tam,"ERROR: Object %s is not attached to any cluster\nbut his flag clusterize is set", pNode->GetName());
-					//MessageBox(NULL, tam, "Warning", MB_OK);
-					nlwarning(tam);
+					nlwarning("ERROR: Object %s is not attached to any cluster\nbut his flag clusterize is set", tStrToUtf8(pNode->GetName()).c_str());
 				}
 				// debug purpose : to remove
 
@@ -712,7 +700,7 @@ void CExportNel::buildScene (NL3D::CScene &scene, NL3D::CShapeBank &shapeBank, I
 		if ( (!pNode->IsHidden () || buildHidden) && (pNode->Selected () || !onlySelected) )
 		{
 			string sTmp = "Object Name: ";
-			sTmp += pNode->GetName();
+			sTmp += tStrToUtf8(pNode->GetName());
 			if (progress)
 				progress->setLine (0, sTmp);
 			sTmp.clear();
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_script.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_script.cpp
index 3d99cee91..1e6304d18 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_script.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_script.cpp
@@ -36,7 +36,7 @@ bool CExportNel::scriptEvaluate (const char *script, void *out, TNelScriptValueT
 	four_typed_value_locals(Parser* parser,Value* code,Value* result,StringStream* source);
 
 	vl.parser = new Parser;
-	vl.source = new StringStream (const_cast<char *>(script));
+	vl.source = new StringStream (utf8ToTStr(script));
 	vl.source->log_to(NULL);
 	save_current_frames();
 	try
diff --git a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_skinning.cpp b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_skinning.cpp
index 3708a0906..ec1bb1f92 100644
--- a/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_skinning.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_mesh_lib/export_skinning.cpp
@@ -114,7 +114,7 @@ INode *CExportNel::getNELScaleReferenceNode(INode &node)
 		{
 			std::string	boneScaleName= getName(node) + boneScaleNameExt;
 			// Get the reference node
-			referenceNode= _Ip->GetINodeByName(boneScaleName.c_str());
+			referenceNode= _Ip->GetINodeByName(utf8ToTStr(boneScaleName));
 		}
 	}
 
@@ -455,7 +455,7 @@ uint CExportNel::buildSkinning (CMesh::CMeshBuild& buildMesh, const TInodePtrInt
 		nlassert ((uint)ite->second<buildMesh.BonesNames.size());
 
 		// Names
-		buildMesh.BonesNames[ite->second] = ite->first->GetName();
+		buildMesh.BonesNames[ite->second] = tStrToUtf8(ite->first->GetName());
 
 		// Next
 		ite++;
@@ -1306,7 +1306,7 @@ static sint	getBoneSide(INode *bone, std::string &mirrorName)
 {
 	sint	side= 0;
 	sint	pos;
-	mirrorName= bone->GetName();
+	mirrorName = tStrToUtf8(bone->GetName());
 
 	if((pos= mirrorName.find(" R "))!=std::string::npos)
 	{
@@ -1335,7 +1335,7 @@ static INode *getMirrorBone(const std::vector<INode*>	&skeletonNodes, INode *bon
 		// find
 		for(uint i=0;i<skeletonNodes.size();i++)
 		{
-			if(mirrorName == skeletonNodes[i]->GetName())
+			if(mirrorName == tStrToUtf8(skeletonNodes[i]->GetName()))
 				return skeletonNodes[i];
 		}
 	}
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_lib/nel_patch_mesh.h b/code/nel/tools/3d/plugin_max/nel_patch_lib/nel_patch_mesh.h
index e9f3b6b3f..d6c4bb522 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_lib/nel_patch_mesh.h
+++ b/code/nel/tools/3d/plugin_max/nel_patch_lib/nel_patch_mesh.h
@@ -450,7 +450,7 @@ public:
 			}
 			catch (const NLMISC::EStream& excp)
 			{
-				MessageBox (NULL, excp.what(), "Load error", MB_OK|MB_ICONEXCLAMATION);
+				MessageBox (NULL, utf8ToTStr(excp.what()), _T("Load error"), MB_OK|MB_ICONEXCLAMATION);
 			}
 		}
 		return _bank;
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo2nel.cpp b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo2nel.cpp
index 55e8a8c55..ea21e8fbe 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo2nel.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_lib/rpo2nel.cpp
@@ -193,7 +193,7 @@ bool RPatchMesh::exportZone(INode* pNode, PatchMesh* pPM, NL3D::CZone& zone, CZo
 				}
 				catch (const EStream& e)
 				{
-					MessageBox (NULL, stream.what(), _T("Error"), MB_OK|MB_ICONEXCLAMATION);
+					MessageBox (NULL, utf8ToTStr(e.what()), _T("Error"), MB_OK|MB_ICONEXCLAMATION);
 				}
 			}
 		}
@@ -253,25 +253,22 @@ bool RPatchMesh::exportZone(INode* pNode, PatchMesh* pPM, NL3D::CZone& zone, CZo
 	if (!patchError.empty())
 	{
 		// Make an error message
-		char error[2098];
-		smprintf (error, 2098, "Error: triple edge detected in ");
+		std::string error = "Error: triple edge detected in ";
 
 		// For each error
 		set<uint>::iterator ite=patchError.begin();
 		while (ite!=patchError.end())
 		{
 			// Sub error message
-			char subError[512];
-			smprintf (subError, 512, "patch %d ", (*ite)+1);
-			strcat (error, subError);
+			error += toString("patch %d ", (*ite)+1);
 
 			// Next error
 			ite++;
 		}
 
 		// Show the message
-		mprintf (error);
-		nlwarning (error);
+		mprintf (utf8ToTStr(error));
+		nlwarning (error.c_str());
 
 		// Error
 		return false;
@@ -612,7 +609,7 @@ bool RPatchMesh::exportZone(INode* pNode, PatchMesh* pPM, NL3D::CZone& zone, CZo
 			uint i;
 			for (i=0; i<error.Errors.size (); i++)
 			{
-				mprintf (error.Errors[i].c_str ());
+				mprintf (utf8ToTStr(error.Errors[i]));
 			}
 			return false;
 		}
diff --git a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
index a9426ed05..799f1012d 100644
--- a/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
+++ b/code/nel/tools/3d/plugin_max/nel_patch_paint/paint.cpp
@@ -3992,7 +3992,7 @@ void EPM_PaintCMode::DoPaint ()
 				}
 				catch (const EStream& stream)
 				{
-					MessageBox (NULL, stream.what(), "Error", MB_OK|MB_ICONEXCLAMATION);
+					MessageBox (NULL, utf8ToTStr(stream.what()), _T("Error"), MB_OK|MB_ICONEXCLAMATION);
 				}
 			}
 		}
diff --git a/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp b/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
index e11605b42..bad5641ee 100644
--- a/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
+++ b/code/nel/tools/3d/plugin_max/tile_utility/tile_utility.cpp
@@ -197,7 +197,7 @@ static INT_PTR CALLBACK Tile_utilityDlgProc(HWND hWnd, UINT msg, WPARAM wParam,
 						ofn.lpTemplateName=0;
 						if (GetOpenFileName(&ofn))
 						{
-							theTile_utility.Load (sPath);
+							theTile_utility.Load (tStrToUtf8(sPath));
 							theTile_utility.SetLand (theTile_utility.Land);
 							theTile_utility.SetupUI ();
 						}
@@ -291,9 +291,8 @@ void Tile_utility::Load (const std::string& path)
 		CIFile file;
 		if (!file.open (path))
 		{
-			char tmp[1024];
-			sprintf (tmp, "File not found: %s", path);
-			MessageBox (NULL, tmp, "Error..", MB_OK|MB_ICONEXCLAMATION);
+			std::string tmp = toString("File not found: %s", path.c_str());
+			MessageBox (NULL, utf8ToTStr(tmp), _T("Error.."), MB_OK|MB_ICONEXCLAMATION);
 		}
 		else
 		{
@@ -304,9 +303,8 @@ void Tile_utility::Load (const std::string& path)
 	}
 	catch (const EStream &stream)
 	{
-		char tmp[1024];
-		sprintf (tmp, "Error while loading %s:\n\n%s", path, stream.what());
-		MessageBox (NULL, tmp, "Error..", MB_OK|MB_ICONEXCLAMATION);
+		std::string tmp = toString("Error while loading %s:\n\n%s", path.c_str(), stream.what());
+		MessageBox (NULL, utf8ToTStr(tmp), _T("Error.."), MB_OK|MB_ICONEXCLAMATION);
 	}
 }
 
@@ -461,7 +459,7 @@ bool Tile_utility::SetupMaterial () const
 					tex->SetAlphaSource (ALPHA_NONE);
 					tex->SetAlphaAsMono (FALSE);
 					tex->SetAlphaAsRGB (FALSE);
-					tex->SetMapName (const_cast<char*>((Bank.getAbsPath()+tile->getRelativeFileName(CTile::diffuse)).c_str()));
+					tex->SetMapName (utf8ToTStr(Bank.getAbsPath() + tile->getRelativeFileName(CTile::diffuse)));
 
 					// Assign BitmapTex
 					rgb->SetSubTexmap (0, tex);
@@ -481,7 +479,7 @@ bool Tile_utility::SetupMaterial () const
 					tex->SetAlphaSource (ALPHA_NONE);
 					tex->SetAlphaAsMono (FALSE);
 					tex->SetAlphaAsRGB (FALSE);
-					tex->SetMapName (const_cast<char*>((Bank.getAbsPath()+tile->getRelativeFileName(CTile::additive)).c_str()));
+					tex->SetMapName (utf8ToTStr(Bank.getAbsPath() + tile->getRelativeFileName(CTile::additive)));
 
 					// Assign BitmapTex
 					rgb->SetSubTexmap (1, tex);
diff --git a/code/nel/tools/3d/tile_edit/View.cpp b/code/nel/tools/3d/tile_edit/View.cpp
index d0eecb229..0cfe0719a 100644
--- a/code/nel/tools/3d/tile_edit/View.cpp
+++ b/code/nel/tools/3d/tile_edit/View.cpp
@@ -417,9 +417,8 @@ int TileList::setTileTransition (int tile, const std::string& name, NL3D::CTile:
 	else
 	{
 		// Error: bitmap not in the absolute path..
-		char msg[512];
-		sprintf (msg, "The bitmap %s is not in the absolute path %s.", name.c_str(), tileBank2.getAbsPath ().c_str());
-		MessageBox (NULL, msg, "Load error", MB_OK|MB_ICONEXCLAMATION);
+		std::string msg = NLMISC::toString("The bitmap %s is not in the absolute path %s.", name.c_str(), tileBank2.getAbsPath ().c_str());
+		MessageBox (NULL, utf8ToTStr(msg), _T("Load error"), MB_OK|MB_ICONEXCLAMATION);
 	}
 
 	return 1;
diff --git a/code/nel/tools/3d/tile_edit/choose_veget_set.cpp b/code/nel/tools/3d/tile_edit/choose_veget_set.cpp
index a8aa6878c..e1ccf4f4f 100644
--- a/code/nel/tools/3d/tile_edit/choose_veget_set.cpp
+++ b/code/nel/tools/3d/tile_edit/choose_veget_set.cpp
@@ -68,8 +68,8 @@ void CChooseVegetSet::OnBrowse()
 	if (dialog.DoModal() == IDOK)
 	{
 		// Get the file name
-		FileName = dialog.GetFileName ();
-		Name.SetWindowText (FileName.c_str());
+		FileName = tStrToUtf8(dialog.GetFileName ());
+		Name.SetWindowText (utf8ToTStr(FileName));
 	}
 }
 
diff --git a/code/ryzom/tools/leveldesign/georges_dll/dfn_dialog.cpp b/code/ryzom/tools/leveldesign/georges_dll/dfn_dialog.cpp
index 301a9d893..2e1cafce8 100644
--- a/code/ryzom/tools/leveldesign/georges_dll/dfn_dialog.cpp
+++ b/code/ryzom/tools/leveldesign/georges_dll/dfn_dialog.cpp
@@ -193,7 +193,7 @@ void CDfnDialog::getFromDocument (const NLGEORGES::CFormDfn &dfn)
 		for (parent=0; parent<dfn.getNumParent (); parent++)
 		{
 			// Add the label and value
-			Parents.ListCtrl.InsertItem (parent, dfn.getParentFilename (parent).c_str ());
+			Parents.ListCtrl.InsertItem (parent, utf8ToTStr(dfn.getParentFilename (parent)));
 		}
 
 		// Add the struct element
@@ -202,12 +202,12 @@ void CDfnDialog::getFromDocument (const NLGEORGES::CFormDfn &dfn)
 		for (elm=0; elm<dfn.getNumEntry (); elm++)
 		{
 			// Add the label and value
-			Struct.ListCtrl.InsertItem (elm, dfn.getEntry (elm).getName ().c_str());
+			Struct.ListCtrl.InsertItem (elm, utf8ToTStr(dfn.getEntry (elm).getName()));
 			switch (elm, dfn.getEntry (elm).getType ())
 			{
 			case UFormDfn::EntryType:
-				Struct.ListCtrl.SetItemText (elm, 1, dfn.getEntry (elm).getArrayFlag () ? "Type array" : "Type");
-				Struct.ListCtrl.SetItemText (elm, 4, dfn.getEntry (elm).getFilenameExt ().c_str());
+				Struct.ListCtrl.SetItemText (elm, 1, dfn.getEntry (elm).getArrayFlag () ? _T("Type array") : _T("Type"));
+				Struct.ListCtrl.SetItemText (elm, 4, utf8ToTStr(dfn.getEntry (elm).getFilenameExt ()));
 				break;
 			case UFormDfn::EntryDfn:
 				Struct.ListCtrl.SetItemText (elm, 1, dfn.getEntry (elm).getArrayFlag () ? _T("Dfn array") : _T("Dfn"));
@@ -216,8 +216,8 @@ void CDfnDialog::getFromDocument (const NLGEORGES::CFormDfn &dfn)
 				Struct.ListCtrl.SetItemText (elm, 1, _T("Virtual Dfn"));
 				break;
 			}
-			Struct.ListCtrl.SetItemText (elm, 2, dfn.getEntry (elm).getFilename ().c_str());
-			Struct.ListCtrl.SetItemText (elm, 3, dfn.getEntry (elm).getDefault ().c_str());
+			Struct.ListCtrl.SetItemText (elm, 2, utf8ToTStr(dfn.getEntry (elm).getFilename()));
+			Struct.ListCtrl.SetItemText (elm, 3, utf8ToTStr(dfn.getEntry (elm).getDefault()));
 		}
 	}
 }
@@ -238,7 +238,7 @@ void CDfnDialog::setParentsToDocument ()
 		{
 			// Add the label and value
 			CString str = Parents.ListCtrl.GetItemText ( parent, 0);
-			vectValue[parent] = str;
+			vectValue[parent] = tStrToUtf8(str);
 		}
 
 		// Modify the document
@@ -267,7 +267,7 @@ void CDfnDialog::setStructToDocument ()
 			{
 				// Get the name
 				CString name= Struct.ListCtrl.GetItemText (elm, subElm);
-				stringVector[elm][subElm] = (const char*)name;
+				stringVector[elm][subElm] = tStrToUtf8(name);
 			}
 		}
 		doc->modify (new CActionStringVectorVector (IAction::DfnStructure, stringVector, *doc, doc->getLeftView ()->getCurrentSelectionId (), 0));
@@ -301,19 +301,19 @@ CEditListCtrl::TItemEdit CDfnEditListCtrl::getItemEditMode (uint item, uint subI
 		return CEditListCtrl::EditFixedCombo;
 	else if (subItem == 2)
 	{
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if (type != "Virtual Dfn")
 			return CEditListCtrl::EditMemCombo;
 	}
 	else if (subItem == 3)
 	{
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if ((type == "Type") || (type == "Type array"))
 			return CEditListCtrl::EditMemCombo;
 	}
 	else if (subItem == 4)
 	{
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if ((type == "Type") || (type == "Type array"))
 			return CEditListCtrl::EditMemCombo;
 	}
@@ -349,7 +349,7 @@ void CDfnEditListCtrl::getMemComboBoxProp (uint item, uint subItem, std::string
 		browse = true;
 
 		// Get type string
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if ((type == "Type") || (type == "Type array"))
 			regAdr = GEORGES_EDIT_BASE_REG_KEY"\\Type MemCombo";
 		else if ((type == "Dfn") || (type == "Dfn array"))
@@ -390,7 +390,7 @@ void CDfnEditListCtrl::getBrowseInfo (uint item, uint subItem, std::string &defE
 	if (subItem == 2)
 	{
 		// Get type string
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if ((type == "Type") || (type == "Type array"))
 		{
 			filter = TypeFilter;
@@ -415,7 +415,7 @@ void CDfnEditListCtrl::onItemChanged (uint item, uint subItem)
 	if (subItem == 1)
 	{
 		// Get type string
-		string type = ListCtrl.GetItemText (item, 1);
+		string type = tStrToUtf8(ListCtrl.GetItemText (item, 1));
 		if ((type == "Type") || (type == "Type array"))
 		{
 			CString str;
@@ -470,16 +470,16 @@ void CDfnDialog::onOpenSelected ()
 					int nItem = Parents.ListCtrl.GetNextSelectedItem(pos);
 
 					// Get the string
-					CString str = Parents.ListCtrl.GetItemText (nItem, 0);
-					if (str != "")
+					std::string str = tStrToUtf8(Parents.ListCtrl.GetItemText (nItem, 0));
+					if (!str.empty())
 					{
 						// Look for the file
-						string name = CPath::lookup ((const char*)str, false, false);
+						string name = CPath::lookup (str, false, false);
 						if (name.empty ())
 							name = str;
 
 						// Open the file
-						theApp.OpenDocumentFile (name.c_str ());
+						theApp.OpenDocumentFile (utf8ToTStr(name));
 					}
 				}
 			}
@@ -492,16 +492,16 @@ void CDfnDialog::onOpenSelected ()
 					int nItem = Struct.ListCtrl.GetNextSelectedItem(pos);
 
 					// Get the string
-					CString str = Struct.ListCtrl.GetItemText (nItem, 2);
-					if (str != "")
+					std::string str = tStrToUtf8(Struct.ListCtrl.GetItemText (nItem, 2));
+					if (!str.empty())
 					{
 						// Look for the file
-						string name = CPath::lookup ((const char*)str, false, false);
+						string name = CPath::lookup (str, false, false);
 						if (name.empty ())
 							name = str;
 
 						// Open the file
-						theApp.OpenDocumentFile (name.c_str ());
+						theApp.OpenDocumentFile (utf8ToTStr(name));
 					}
 				}
 			}
diff --git a/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp b/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
index 549c953e4..e42408f3d 100644
--- a/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
+++ b/code/ryzom/tools/leveldesign/georges_dll/georges_edit.cpp
@@ -477,9 +477,9 @@ void CGeorgesEditApp::OnAppAbout()
 void CGeorgesEditApp::outputError (const char* message)
 {
 	if (m_pMainWnd)
-		m_pMainWnd->MessageBox (message, "Georges Edit", MB_OK|MB_ICONEXCLAMATION);
+		m_pMainWnd->MessageBox (utf8ToTStr(message), _T("Georges Edit"), MB_OK|MB_ICONEXCLAMATION);
 	else
-		MessageBox (NULL, message, "Georges Edit", MB_OK|MB_ICONEXCLAMATION);
+		MessageBox (NULL, utf8ToTStr(message), _T("Georges Edit"), MB_OK|MB_ICONEXCLAMATION);
 }
 
 void CGeorgesEditApp::getConfigFilePath (std::string &output)
diff --git a/code/ryzom/tools/leveldesign/mission_compiler_fe/mission_compiler_feDlg.cpp b/code/ryzom/tools/leveldesign/mission_compiler_fe/mission_compiler_feDlg.cpp
index 1d7396ee0..d43277d6c 100644
--- a/code/ryzom/tools/leveldesign/mission_compiler_fe/mission_compiler_feDlg.cpp
+++ b/code/ryzom/tools/leveldesign/mission_compiler_fe/mission_compiler_feDlg.cpp
@@ -698,8 +698,8 @@ void CMissionCompilerFeDlg::OnSpecialRuncompilertest()
 	catch(const EParseException &e)
 	{
 		string msg = "In primitive ";
-		msg += buildPrimPath(e.Primitive) +" : "+e.Why;
-		AfxMessageBox(msg.c_str());
+		msg += buildPrimPath(e.Primitive) + ": " + e.Why;
+		AfxMessageBox(utf8ToTStr(msg));
 	}
 	
 }
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor/builder_zone.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor/builder_zone.cpp
index 30b15cf8d..63b1d545f 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor/builder_zone.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor/builder_zone.cpp
@@ -130,7 +130,7 @@ bool CDataBase::init (const string &Path, CZoneBank &zb)
 	string sDirBackup = NLMISC::CPath::getCurrentPath();
 
 	// "Path" can be relative to the doc path so we have to be first in the doc path
-	string s2 = NLMISC::CFile::getPath ((LPCTSTR)getMainFrame()->getDocument()->GetPathName());
+	string s2 = NLMISC::CFile::getPath (tStrToUtf8(getMainFrame()->getDocument()->GetPathName()));
 	NLMISC::CPath::setCurrentPath(s2.c_str());
 	string ss = NLMISC::CPath::getFullPath(Path);
 	NLMISC::CPath::setCurrentPath (ss.c_str());
@@ -622,8 +622,8 @@ bool CBuilderZone::refresh ()
 			if (!_ZoneRegions[_ZoneRegionSelected]->init (&_ZoneBank, this, error))
 			{
 				unload (_ZoneRegionSelected);
-				MessageBox (NULL, ("Cannot add this zone :\n"+error).c_str(), 
-							"Error", MB_ICONERROR|MB_OK);
+				std::string msg = NLMISC::toString("Cannot add this zone :\n%s", error.c_str());
+				MessageBox (NULL, utf8ToTStr(msg), _T("Error"), MB_ICONERROR|MB_OK);
 				return false;
 			}
 
@@ -1601,7 +1601,7 @@ bool CBuilderZone::initZoneBank (const string &sPathName)
 	// TODO: replace by NeL methods
 	TCHAR sDirBackup[512];
 	GetCurrentDirectory (512, sDirBackup);
-	SetCurrentDirectory (sPathName.c_str());
+	SetCurrentDirectory (utf8ToTStr(sPathName));
 	WIN32_FIND_DATA findData;
 	HANDLE hFind;
 	hFind = FindFirstFile (_T("*.ligozone"), &findData);
@@ -1612,7 +1612,7 @@ bool CBuilderZone::initZoneBank (const string &sPathName)
 		if (!((_tcscmp (findData.cFileName, _T(".")) == 0) || (_tcscmp (findData.cFileName, _T("..")) == 0)))
 		{
 			string error;
-			if (!_ZoneBank.addElement (findData.cFileName, error))
+			if (!_ZoneBank.addElement (tStrToUtf8(findData.cFileName), error))
 				theApp.errorMessage (error.c_str());
 		}
 		if (FindNextFile (hFind, &findData) == 0)
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor/file_dialog_ex.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor/file_dialog_ex.cpp
index 9ee63294a..706c4053e 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor/file_dialog_ex.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor/file_dialog_ex.cpp
@@ -37,9 +37,9 @@ CFileDialogEx::CFileDialogEx(LPCTSTR lpszRegistryPath, LPCTSTR lpszFileType,BOOL
 							 LPCTSTR lpszDefExt, LPCTSTR lpszFileName, DWORD dwFlags, LPCTSTR lpszFilter, CWnd* pParentWnd) :
 		CFileDialog(bOpenFileDialog, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd)
 {
-	_RegistryPath = lpszRegistryPath;
+	_RegistryPath = tStrToUtf8(lpszRegistryPath);
 	_RegistryPath += "\\CFileDialogEx";
-	_FileType = lpszFileType;
+	_FileType = tStrToUtf8(lpszFileType);
 }
 
 // ***************************************************************************
@@ -58,10 +58,10 @@ INT_PTR CFileDialogEx::DoModal ()
 	path[0] = 0;
 	HKEY hKey;
 	DWORD type = REG_SZ;
-	DWORD size = 512;
-	if (RegCreateKey (HKEY_CURRENT_USER, _RegistryPath.c_str (), &hKey) == ERROR_SUCCESS)
+	DWORD size = 512 * sizeof(TCHAR);
+	if (RegCreateKey (HKEY_CURRENT_USER, utf8ToTStr(_RegistryPath), &hKey) == ERROR_SUCCESS)
 	{
-		if (RegQueryValueEx (hKey, _FileType.c_str (), 0, &type, (LPBYTE)path, &size) == ERROR_SUCCESS)
+		if (RegQueryValueEx (hKey, utf8ToTStr(_FileType), 0, &type, (LPBYTE)path, &size) == ERROR_SUCCESS)
 			m_ofn.lpstrInitialDir = path;
 	}
 
@@ -73,9 +73,9 @@ INT_PTR CFileDialogEx::DoModal ()
 	if ((result = CFileDialog::DoModal ()) == IDOK)
 	{
 		// Update the path
-		std::string newPath = (const char *)GetPathName ();
+		std::string newPath = tStrToUtf8(GetPathName ());
 		newPath = NLMISC::CFile::getPath (newPath);
-		RegSetValueEx (hKey, _FileType.c_str (), 0, REG_SZ, (LPBYTE)newPath.c_str (), newPath.size ()+1);
+		RegSetValueEx (hKey, utf8ToTStr(_FileType), 0, REG_SZ, (LPBYTE)newPath.c_str (), newPath.size ()+1);
 
 		// Update the path list
 		set<string> oldPath;
@@ -83,15 +83,15 @@ INT_PTR CFileDialogEx::DoModal ()
 		for (i=0; i<PATH_REMEBERED_SIZE; i++)
 		{
 			size = 512;
-			if (RegQueryValueEx (hKey, toString (i).c_str (), 0, &type, (LPBYTE)path, &size) == ERROR_SUCCESS)
-				oldPath.insert (path);
+			if (RegQueryValueEx (hKey, utf8ToTStr(toString(i)), 0, &type, (LPBYTE)path, &size) == ERROR_SUCCESS)
+				oldPath.insert (tStrToUtf8(path));
 		}
 		oldPath.insert (newPath);
 		set<string>::const_iterator ite = oldPath.begin ();
 		uint index = 0;
 		while (ite != oldPath.end ())
 		{
-			RegSetValueEx (hKey, toString (index).c_str (), 0, REG_SZ, (LPBYTE)ite->c_str (), ite->size ()+1);
+			RegSetValueEx (hKey, utf8ToTStr(toString(index)), 0, REG_SZ, (LPBYTE)ite->c_str (), ite->size ()+1);
 			ite++;
 			index++;
 		}
@@ -153,13 +153,13 @@ BOOL CFileDialogEx::OnInitDialog()
 	HKEY hKey;
 	DWORD type = REG_SZ;
 	DWORD size;
-	if (RegCreateKey (HKEY_CURRENT_USER, _RegistryPath.c_str (), &hKey) == ERROR_SUCCESS)
+	if (RegCreateKey (HKEY_CURRENT_USER, utf8ToTStr(_RegistryPath), &hKey) == ERROR_SUCCESS)
 	{
 		uint i;
 		for (i=0; i<PATH_REMEBERED_SIZE; i++)
 		{
-			size = 512;
-			if (RegQueryValueEx (hKey, toString (i).c_str (), 0, &type, (LPBYTE)text, &size) == ERROR_SUCCESS)
+			size = 512 * sizeof(TCHAR);
+			if (RegQueryValueEx (hKey, utf8ToTStr(toString(i)), 0, &type, (LPBYTE)text, &size) == ERROR_SUCCESS)
 				combo.InsertString (-1, text);
 		}
 		if (m_ofn.lpstrInitialDir)
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor/name_dlg.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor/name_dlg.cpp
index 3a1b37d5c..1ef76d077 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor/name_dlg.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor/name_dlg.cpp
@@ -248,8 +248,8 @@ void CNameDlg::OnBtnAssign()
 
 	// get strings
 	ucstring id;
-	std::string gn = m_assignGn;
-	std::string ig = m_assignIg;
+	std::string gn = tStrToUtf8(m_assignGn);
+	std::string ig = tStrToUtf8(m_assignIg);
 
 	for (uint i=0 ; i<sel.size() ; i++)
 	{
@@ -265,7 +265,7 @@ void CNameDlg::OnBtnAssign()
 			uint n = m_idList.GetTextLen(i);
 			m_idList.GetText(i, str.GetBuffer(n));
 			str.ReleaseBuffer();
-			id = str;
+			id.fromUtf8(tStrToUtf8(str));
 		}
 
 		// assign name to selected id
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor_graph_plugin/graph_plugin.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor_graph_plugin/graph_plugin.cpp
index 06c5d4dd8..3f4c5edc9 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor_graph_plugin/graph_plugin.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor_graph_plugin/graph_plugin.cpp
@@ -172,7 +172,7 @@ void CGraphPlugin::refreshPrimitives()
 			{
 				string msg("Can't write script file '");
 				msg += tmpPath+"/lang.dot'";
-				AfxMessageBox(msg.c_str());
+				AfxMessageBox(utf8ToTStr(msg));
 			}
 			else
 			{
@@ -207,11 +207,11 @@ void CGraphPlugin::refreshPrimitives()
 				
 				err = toString("%s : %s", primName.c_str(), e.Why.c_str());
 			}
-			AfxMessageBox(err.c_str());
+			AfxMessageBox(utf8ToTStr(err));
 		}
 		catch (const exception &e) //catch a possible exception from getRootFileName
 		{
-			AfxMessageBox(e.what());
+			AfxMessageBox(utf8ToTStr(e.what()));
 		}
 	}
 	else
@@ -254,7 +254,7 @@ void CGraphPlugin::refreshMachine()
 		{
 			string msg("Can't write script file '");
 			msg += tmpPath+"/lang.dot'";
-			AfxMessageBox(msg.c_str());
+			AfxMessageBox(utf8ToTStr(msg));
 		}
 		else
 		{
@@ -298,7 +298,7 @@ void CGraphPlugin::refreshMachine()
 			{
 				string msg("Can't write script file '");
 				msg += tmpPath+"/lang.dot'";
-				AfxMessageBox(msg.c_str());
+				AfxMessageBox(utf8ToTStr(msg));
 			}
 			else
 			{
@@ -938,9 +938,10 @@ void CGraphPlugin::doSelection(const string& primPath)
 			selectPrimByPath(rootNode,primPath,resSet);
 
 			_PluginAccess->setCurrentSelection(resSet);
-
-		}catch(const exception &e){
-			GraphDlg->MessageBox(e.what());
+		}
+		catch(const exception &e)
+		{
+			GraphDlg->MessageBox(utf8ToTStr(e.what()));
 		}
 	}
 }
\ No newline at end of file
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/DialogFlags.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/DialogFlags.cpp
index 223860403..54184c45a 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/DialogFlags.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/DialogFlags.cpp
@@ -301,7 +301,7 @@ void CDialogFlags::setCurrentEntityDisplayMode(TEntityDisplayMode edm)
 void CDialogFlags::loadEntityDisplayInfoToRegistry(TEntityDisplayInfoVect &infos, const std::string &regId)
 {
 	HKEY hKey;
-	if (RegOpenKeyEx(HKEY_CURRENT_USER, (REGKEY_ENTITY_DISPLAY_INFO + regId).c_str(), 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
+	if (RegOpenKeyEx(HKEY_CURRENT_USER, utf8ToTStr(tStrToUtf8(REGKEY_ENTITY_DISPLAY_INFO) + regId), 0, KEY_QUERY_VALUE, &hKey) == ERROR_SUCCESS)
 	{
 		DWORD index  = 0;
 		for(;;)
@@ -338,14 +338,14 @@ void CDialogFlags::loadEntityDisplayInfoToRegistry(TEntityDisplayInfoVect &infos
 void CDialogFlags::saveEntityDisplayInfoToRegistry(const TEntityDisplayInfoVect &infos, const std::string &regId)
 {
 	HKEY hKey;
-	if (RegCreateKeyEx(HKEY_CURRENT_USER, (REGKEY_ENTITY_DISPLAY_INFO + regId).c_str(), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL) == ERROR_SUCCESS)
+	if (RegCreateKeyEx(HKEY_CURRENT_USER, utf8ToTStr(tStrToUtf8(REGKEY_ENTITY_DISPLAY_INFO) + regId), 0, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL) == ERROR_SUCCESS)
 	{
 		for(uint k = 0; k < infos.size(); ++k)
 		{
 			char colorStr[128];
 			CRGBA color = infos[k].Color;
 			sprintf(colorStr, "%d, %d, %d, visible = %d", (int) color.R, (int) color.G, (int) color.B, (int) (infos[k].Visible ? 1 : 0));
-			LONG result = RegSetValueEx(hKey, toString((int) infos[k].Value).c_str(), 0, REG_SZ, (const BYTE *) colorStr, strlen(colorStr));
+			LONG result = RegSetValueEx(hKey, utf8ToTStr(toString(infos[k].Value)), 0, REG_SZ, (const BYTE *) colorStr, strlen(colorStr));
 			if (result  != ERROR_SUCCESS)
 			{
 				nlwarning("Couldn't write registry key for entity % color", infos[k].Name);
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/memory_combo_box.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/memory_combo_box.cpp
index 5788c2d72..531b58e89 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/memory_combo_box.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/memory_combo_box.cpp
@@ -47,7 +47,7 @@ void CMemoryComboBox::create (DWORD style, const RECT &rect, CWnd *parent, UINT
 {
 	// Register a window
 	Id = nId;
-	RegisterAdress = registerAdress;
+	RegisterAdress = tStrToUtf8(registerAdress);
 	MemoryCount = memoryCount;
 	LPCTSTR clas = AfxRegisterWndClass (0);
 	if (clas)
@@ -95,16 +95,16 @@ bool CMemoryComboBox::getMemory (int slot, std::string &ret)
 {
 	// Open the key
 	HKEY hKey;
-	if (RegOpenKey (HKEY_CURRENT_USER, RegisterAdress.c_str (), &hKey) == ERROR_SUCCESS)
+	if (RegOpenKey (HKEY_CURRENT_USER, utf8ToTStr(RegisterAdress), &hKey) == ERROR_SUCCESS)
 	{
 		// Get the value
 		char strSrc[512];
 		smprintf (strSrc, 512, "%d", slot);
-		char str[512];
-		long size = 512;
-		if (RegQueryValue (hKey, strSrc, str, &size) == ERROR_SUCCESS)
+		TCHAR str[512];
+		long size = 512*sizeof(TCHAR);
+		if (RegQueryValue (hKey, utf8ToTStr(strSrc), str, &size) == ERROR_SUCCESS)
 		{
-			ret = str;
+			ret = tStrToUtf8(str);
 
 			// Close
 			RegCloseKey (hKey);
@@ -124,7 +124,7 @@ void CMemoryComboBox::scrollDown (int start, int end)
 {
 	// Open the key
 	HKEY hKey;
-	if (RegCreateKey (HKEY_CURRENT_USER, RegisterAdress.c_str (), &hKey) == ERROR_SUCCESS)
+	if (RegCreateKey (HKEY_CURRENT_USER, utf8ToTStr(RegisterAdress), &hKey) == ERROR_SUCCESS)
 	{
 		// Scroll down the list
 		for (int i=end-1; i>start; i--)
@@ -132,14 +132,14 @@ void CMemoryComboBox::scrollDown (int start, int end)
 			// Get the old value
 			char strSrc[512];
 			smprintf (strSrc, 512, "%d", i-1);
-			char str[512];
-			long size = 512;
-			if (RegQueryValue (hKey, strSrc, str, &size) == ERROR_SUCCESS)
+			TCHAR str[512];
+			long size = 512 * sizeof(TCHAR);
+			if (RegQueryValue (hKey, utf8ToTStr(strSrc), str, &size) == ERROR_SUCCESS)
 			{
 				// Set the value
 				char strDst[512];
 				smprintf (strDst, 512, "%d", i);
-				RegSetValue (hKey, strDst, REG_SZ, str, size);
+				RegSetValue (hKey, utf8ToTStr(strDst), REG_SZ, str, size);
 			} 
 		}
 
@@ -154,10 +154,10 @@ void CMemoryComboBox::writeStringInRegistry (const std::string &str)
 {
 	// Open the key
 	HKEY hKey;
-	if (RegCreateKey (HKEY_CURRENT_USER, RegisterAdress.c_str (), &hKey) == ERROR_SUCCESS)
+	if (RegCreateKey (HKEY_CURRENT_USER, utf8ToTStr(RegisterAdress), &hKey) == ERROR_SUCCESS)
 	{
 		// Set the value
-		RegSetValue (hKey, "0", REG_SZ, str.c_str (), str.size ());
+		RegSetValue (hKey, _T("0"), REG_SZ, utf8ToTStr(str), str.size ());
 
 		// Close
 		RegCloseKey (hKey);
@@ -364,7 +364,7 @@ void CMemoryComboBox::pushString ()
 {
 	CString str;
 	GetWindowText (str);
-	pushString((LPCTSTR) str);
+	pushString(tStrToUtf8(str));
 }
 
 
@@ -428,7 +428,7 @@ void CMemoryComboBox::pushString (const std::string &str)
 			if (i == (int)(itemCount+Commands.size()+ StaticStrings.size()))
 			{
 				// Insert the sting
-				_ComboBox.InsertString (Commands.size()+ StaticStrings.size(), str.c_str());
+				_ComboBox.InsertString (Commands.size()+ StaticStrings.size(), utf8ToTStr(str));
 			}
 		}
 	}
@@ -449,7 +449,7 @@ void CMemoryComboBox::refreshStrings ()
 	int count = Commands.size();
 	for (i=0; i<StaticStrings.size(); i++)
 	{
-		_ComboBox.InsertString (count, StaticStrings[i].c_str ());
+		_ComboBox.InsertString (count, utf8ToTStr(StaticStrings[i]));
 		count++;
 	}
 
@@ -458,7 +458,7 @@ void CMemoryComboBox::refreshStrings ()
 		std::string ret;
 		if (getMemory (i, ret))
 		{
-			_ComboBox.InsertString (count, ret.c_str ());
+			_ComboBox.InsertString (count, utf8ToTStr(ret));
 			count++;
 		}
 	}
@@ -497,7 +497,7 @@ void CMemoryComboBox::clearCommand ()
 
 void CMemoryComboBox::addLabelCommands (uint i)
 {
-	_ComboBox.InsertString (i, Commands[i].Label.c_str ());
+	_ComboBox.InsertString (i, utf8ToTStr(Commands[i].Label));
 }
 
 // ***************************************************************************
@@ -684,11 +684,11 @@ BOOL CMemoryComboBox::PreTranslateMessage(MSG* pMsg)
 					{
 						CString str;
 						_ComboBox.GetWindowText (str);
-						string str2 = str;
+						string str2 = tStrToUtf8(str);
 						if ((!str2.empty ()) && (str2.find ('.') == string::npos))
 						{
 							str2 += "." + _Extension;
-							_ComboBox.SetWindowText (str2.c_str ());
+							_ComboBox.SetWindowText (utf8ToTStr(str2));
 						}
 					}
 
@@ -739,7 +739,7 @@ CString CMemoryComboBox::getCurrString() const
 // ***************************************************************************
 void CMemoryComboBox::setCurSel(const std::string &value)
 {
-	int index = _ComboBox.FindStringExact(0, value.c_str());
+	int index = _ComboBox.FindStringExact(0, utf8ToTStr(value));
 	if (index != CB_ERR)
 	{
 		_ComboBox.SetCurSel(index);
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/plugin.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/plugin.cpp
index 793988365..72453fa70 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/plugin.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor_shard_monitor_plugin/plugin.cpp
@@ -498,8 +498,8 @@ void CPlugin::serverParamsReceived(const CServerParams &sp)
 		{
 			CMessage msg;
 			msg.setType("AUTHENT");
-			std::string login = (LPCTSTR)dl.m_Login;
-			std::string password = (LPCTSTR)dl.m_Password;
+			std::string login = tStrToUtf8(dl.m_Login);
+			std::string password = tStrToUtf8(dl.m_Password);
 			sint ver = msg.serialVersion(0);
 			msg.serial(login);
 			msg.serial(password);
@@ -719,7 +719,7 @@ void CPlugin::connectDisconnect()
 			nlassert (_DialogFlag);
 			_DialogFlag->UpdateData (TRUE);
 
-			_SHost = (const char*)_DialogFlag->ShardCtrl.getCurrString();
+			_SHost = tStrToUtf8(_DialogFlag->ShardCtrl.getCurrString());
 
 			_DialogFlag->ShardCtrl.onOK();
 			
@@ -1189,7 +1189,7 @@ void CPlugin::updateConnectionState()
 				// Change the text
 				_DialogFlag->ConnectCtrl.SetWindowText (getStringRsc(IDS_DISCONNECT));
 				_DialogFlag->State = (LPCTSTR) (getStringRsc(IDS_CONNECTED_TO) + _SHost.c_str());
-				_DialogFlag->Sent = (toString ((uint32)_Client->getBytesSent ()) + (LPCTSTR) getStringRsc(IDS_BYTE_SENT)).c_str();
+				_DialogFlag->Sent = CString(utf8ToTStr(toString (_Client->getBytesSent ()))) + getStringRsc(IDS_BYTE_SENT);
 				//_DialogFlag->Received = (toString ((uint32)_Client->getBytesReceived ()) + " bytes received").c_str();
 				_DialogFlag->Received = (toString("%.1f", bandwidth/1024.0) + " kB/s").c_str();
 				_DialogFlag->DownloadValue = (toString("%.1f kB/s", _DialogFlag->Download/1024.0)).c_str();
@@ -1198,12 +1198,12 @@ void CPlugin::updateConnectionState()
 			break;
 			case WaitingServerParams:				
 				_DialogFlag->ConnectCtrl.SetWindowText (getStringRsc(IDS_CANCEL_CONNECT));
-				_DialogFlag->State = (LPCTSTR) (getStringRsc(IDS_WAITING_SERVER_PARAMS) + _SHost.c_str());
+				_DialogFlag->State = getStringRsc(IDS_WAITING_SERVER_PARAMS) + utf8ToTStr(_SHost);
 			break;
 			case WaitingLoginConfirmation:
 			{
 				_DialogFlag->ConnectCtrl.SetWindowText (getStringRsc(IDS_CANCEL_CONNECT));				
-				std::string label = (LPCTSTR) getStringRsc(IDS_WAITING_LOGIN_CONFIRMATION) +_SHost;
+				std::string label = tStrToUtf8(getStringRsc(IDS_WAITING_LOGIN_CONFIRMATION)) + _SHost;
 				switch((NLMISC::CTime::getLocalTime() / 200) % 4)
 				{
 					case 0: label+= "-";  break;
diff --git a/code/ryzom/tools/leveldesign/world_editor/world_editor_sound_plugin/DialogFlags.cpp b/code/ryzom/tools/leveldesign/world_editor/world_editor_sound_plugin/DialogFlags.cpp
index 0d1e0cbe7..a83578c9f 100644
--- a/code/ryzom/tools/leveldesign/world_editor/world_editor_sound_plugin/DialogFlags.cpp
+++ b/code/ryzom/tools/leveldesign/world_editor/world_editor_sound_plugin/DialogFlags.cpp
@@ -225,19 +225,20 @@ void CDialogFlags::OnTimer(UINT_PTR nIDEvent)
 	c = _SbList.GetItemCount();
 	for (i=0; i<SampleBanks.size(); ++i)
 	{
+		std::string temp = toString("%6.2f", SampleBanks[i].second / (1024.0f*1024.0f));
+
 		if (i < c)
 		{
 			// update the item
-			char temp[1024];
-			sprintf(temp, "%6.2f", SampleBanks[i].second / (1024.0f*1024.0f));
+			TCHAR temp2[1024];
 
-			char temp2[1024];
 			_SbList.GetItemText(i, 0, temp2, 1024);
-			if (strcmp(SampleBanks[i].first.c_str(), temp2) != 0)
-				_SbList.SetItemText(i, 0, SampleBanks[i].first.c_str());
+			if (_tcscmp(utf8ToTStr(SampleBanks[i].first), temp2) != 0)
+				_SbList.SetItemText(i, 0, utf8ToTStr(SampleBanks[i].first));
+
 			_SbList.GetItemText(i, 1, temp2, 1024);
-			if (strcmp(temp, temp2) != 0)
-				_SbList.SetItemText(i, 1, temp);
+			if (_tcscmp(utf8ToTStr(temp), temp2) != 0)
+				_SbList.SetItemText(i, 1, utf8ToTStr(temp));
 		}
 		else
 		{