diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_program.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_program.cpp
index 45da4d218..6e56cafeb 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_vertex_program.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_vertex_program.cpp
@@ -1440,6 +1440,14 @@ bool CDriverGL::setupARBVertexProgram (const CVPParser::TProgram &inParsedProgra
 		nlassert(0);
 		return false;
 	}
+
+#ifdef NL_OS_MAC
+	// Wait for GPU to finish program upload, else draw comands might crash.
+	// Happened to CVegetableBlendLayerModel (glDrawElements()).
+	// For more information, see http://dev.ryzom.com/issues/1006
+	glFinish();
+#endif
+
 	return true;
 }
 
diff --git a/code/ryzom/client/src/main_loop.cpp b/code/ryzom/client/src/main_loop.cpp
index f8ff5ae89..2a513244a 100644
--- a/code/ryzom/client/src/main_loop.cpp
+++ b/code/ryzom/client/src/main_loop.cpp
@@ -700,9 +700,6 @@ void updateFromClientCfg()
 	//---------------------------------------------------
 	if (Landscape)
 	{
-#ifdef NL_OS_MAC
-		Landscape->enableVegetable(false);
-#else
 		if (ClientCfg.MicroVeget != LastClientCfg.MicroVeget)
 		{
 			if(ClientCfg.MicroVeget)
@@ -722,7 +719,6 @@ void updateFromClientCfg()
 				Landscape->enableVegetable(false);
 			}
 		}
-#endif
 	}
 
 	//---------------------------------------------------