diff --git a/code/PretransformVertices.cpp b/code/PretransformVertices.cpp
index c58816d22..ccf725d7f 100644
--- a/code/PretransformVertices.cpp
+++ b/code/PretransformVertices.cpp
@@ -105,13 +105,13 @@ unsigned int PretransformVertices::GetMeshVFormat(aiMesh* pcMesh)
 	// from scratch. The pointer is unused as animations are lost
 	// during PretransformVertices.
 	if (pcMesh->mBones)
-		return (unsigned int)(unsigned long)pcMesh->mBones;
+		return (unsigned int)(uint64_t)pcMesh->mBones;
 
 
 	const unsigned int iRet = GetMeshVFormatUnique(pcMesh);
 
 	// store the value for later use
-	pcMesh->mBones = (aiBone**)(unsigned long)iRet;
+	pcMesh->mBones = (aiBone**)(uint64_t)iRet;
 	return iRet;
 }
 
diff --git a/contrib/irrXML/irrTypes.h b/contrib/irrXML/irrTypes.h
index da7cf09bb..760359a57 100644
--- a/contrib/irrXML/irrTypes.h
+++ b/contrib/irrXML/irrTypes.h
@@ -79,10 +79,10 @@ typedef unsigned short wchar_t;
 #endif // microsoft compiler
 
 //! define a break macro for debugging only in Win32 mode.
-// WORKAROUND (ASSIMP): __asm int 3 not av. for x64
+// WORKAROUND (ASSIMP): remove __asm
 #if defined(WIN32) && defined(_MSC_VER) && defined(_DEBUG)
 #if defined(_M_IX86)
-#define _IRR_DEBUG_BREAK_IF( _CONDITION_ ) if (_CONDITION_) {_asm int 3}
+#define _IRR_DEBUG_BREAK_IF( _CONDITION_ ) /*if (_CONDITION_) {_asm int 3}*/
 #else
 #define _IRR_DEBUG_BREAK_IF( _CONDITION_ )
 #endif
@@ -96,8 +96,10 @@ When you call unmanaged code that returns a bool type value of false from manage
 the return value may appear as true. See 
 http://support.microsoft.com/default.aspx?kbid=823071 for details. 
 Compiler version defines: VC6.0 : 1200, VC7.0 : 1300, VC7.1 : 1310, VC8.0 : 1400*/
+
+// WORKAROUND (ASSIMP): remove __asm 
 #if defined(WIN32) && defined(_MSC_VER) && (_MSC_VER > 1299) && (_MSC_VER < 1400)
-#define _IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX __asm mov eax,100
+#define _IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX /*__asm mov eax,100*/
 #else
 #define _IRR_IMPLEMENT_MANAGED_MARSHALLING_BUGFIX
 #endif // _IRR_MANAGED_MARSHALLING_BUGFIX
diff --git a/tools/assimp_cmd/Main.cpp b/tools/assimp_cmd/Main.cpp
index 90d1888d7..b0cab8bb0 100644
--- a/tools/assimp_cmd/Main.cpp
+++ b/tools/assimp_cmd/Main.cpp
@@ -246,10 +246,10 @@ int ProcessStandardArguments(ImportData& fill, const char** params,
 			fill.ppFlags |= aiProcess_ConvertToLeftHanded;
 		}
 		else if (! ::strcmp(params[i], "-fuv") || ! ::strcmp(params[i], "--flip-uv")) {
-			fill.ppFlags |= aiProcess_ConvertToLeftHanded;
+			fill.ppFlags |= aiProcess_FlipUVs;
 		}
 		else if (! ::strcmp(params[i], "-fwo") || ! ::strcmp(params[i], "--flip-winding-order")) {
-			fill.ppFlags |= aiProcess_ConvertToLeftHanded;
+			fill.ppFlags |= aiProcess_FlipWindingOrder;
 		}
 		else if (! ::strcmp(params[i], "-tuv") || ! ::strcmp(params[i], "--transform-uv-coords")) {
 			fill.ppFlags |= aiProcess_TransformUVCoords;
diff --git a/workspaces/SCons/SConstruct b/workspaces/SCons/SConstruct
index fe9931bbf..31eae61c7 100644
--- a/workspaces/SCons/SConstruct
+++ b/workspaces/SCons/SConstruct
@@ -17,7 +17,7 @@ g_IncPath = Split("""
 	/usr/local/include/
 """)
 #------------------------------------------------------------------------------
-g_assimp_lib_Source =  Glob(r"../../code/*.cpp") +     Glob(r"../../contrib/irrXML/*.cpp") + Glob(r"../../contrib/zlib/*.c") + Glob(r"../../code/extra/*.cpp") 
+g_assimp_lib_Source =  Glob(r"../../code/*.cpp") +     Glob(r"../../contrib/irrXML/*.cpp") + Glob(r"../../contrib/zlib/*.c") + Glob(r"../../code/extra/*.cpp") + Glob(r"../../contrib/ConvertUTF/*.c")
 
 #------------------------------------------------------------------------------
 # don't reset CC/CXX-variable, other users might have set it to something special
@@ -29,6 +29,9 @@ if ARGUMENTS.get('debug', 0):
 	ccflags = ccflags + ' -g -pg -Wall -pedantic '
 else:
 	ccflags = ccflags + ' -Os -fno-strict-aliasing -msse -Wall -pedantic'
+    
+#if ARGUMENTS.get('noboost', 0):
+#    ccflags = ccflags + ' -DASSIMP_BUILD_BOOST_WORKAROUND '
 	
 env = Environment(CCFLAGS = ccflags, CPPPATH = g_IncPath, LIBPATH=g_LibPath)
 conf = Configure( env )