diff --git a/patch/01_ryzom_ai_service_script_vm_crash_native_call.patch b/patch/01_ryzom_ai_service_script_vm_crash_native_call.patch
new file mode 100644
index 000000000..a910212d3
--- /dev/null
+++ b/patch/01_ryzom_ai_service_script_vm_crash_native_call.patch
@@ -0,0 +1,84 @@
+diff --git a/code/nel/include/nel/misc/smart_ptr.h b/code/nel/include/nel/misc/smart_ptr.h
+index 2273cebeb..df80c7b77 100644
+--- a/code/nel/include/nel/misc/smart_ptr.h
++++ b/code/nel/include/nel/misc/smart_ptr.h
+@@ -495,6 +495,7 @@ public:
+ 	: _DbgCRefs(0)
+ 	, _DbgCCstRefs(0)
+ 	, _MaxRef(maxRef)
++	, _CheckOn(true)
+ 	, _FirstReference(NULL)
+ 	, _FirstCstReference(NULL)
+ 	{
+diff --git a/code/ryzom/server/src/ai_service/script_vm.h b/code/ryzom/server/src/ai_service/script_vm.h
+index bc6e56c15..0b931c63d 100644
+--- a/code/ryzom/server/src/ai_service/script_vm.h
++++ b/code/ryzom/server/src/ai_service/script_vm.h
+@@ -141,6 +141,8 @@ public:
+ 		union
+ 		{
+ 			int	_vali;
++			float _valf;
++			std::string * _valsp;
+ 			uintptr_t _valp;
+ 		};
+ 
+@@ -351,7 +353,7 @@ inline
+ CScriptStack::CStackEntry& CScriptStack::CStackEntry::operator=(float const& f)
+ {
+ 	clean();
+-	_vali = *((int*)&f);
++	_valf = f;
+ 	_type = EFloat;
+ 	return *this;
+ }
+@@ -368,7 +370,7 @@ CScriptStack::CStackEntry& CScriptStack::CStackEntry::operator=(std::string cons
+ {
+ 	clean();
+ 	std::string* const strPt = new std::string(str);
+-	_valp = *((int*)&strPt);
++	_valsp = strPt;
+ 	_type = EString;
+ 	return *this;
+ }
+@@ -376,7 +378,7 @@ inline
+ CScriptStack::CStackEntry& CScriptStack::CStackEntry::operator=(IScriptContext* sc)
+ {
+ 	clean();
+-	_valp = *((int*)&sc);
++	_valp = (uintptr_t) sc;
+ 	_type = EContext;
+ 	return *this;
+ }
+@@ -484,13 +486,13 @@ inline
+ std::string& CScriptStack::CStackEntry::getString()
+ {
+ 	nlassert(_type==EString);
+-	return *(*((std::string**)&_valp));
++	return *( (std::string*) _valp);
+ }
+ inline
+ std::string const& CScriptStack::CStackEntry::getString() const
+ {
+ 	nlassert(_type==EString);
+-	return *(*((std::string**)&_valp));
++	return *_valsp;
+ }
+ inline
+ IScriptContext* CScriptStack::CStackEntry::getIScriptContext()
+@@ -514,13 +516,13 @@ inline
+ float& CScriptStack::CStackEntry::getFloat()
+ {
+ 	nlassert(_type==EFloat);
+-	return *((float*)&_vali);
++	return _valf;
+ }
+ inline
+ float const& CScriptStack::CStackEntry::getFloat() const
+ {
+ 	nlassert(_type==EFloat);
+-	return *((float const*)&_vali);
++	return _valf;
+ }
+ 
+ inline