diff --git a/code/ACLoader.cpp b/code/ACLoader.cpp
index 5522dbf86..d84bb0e9d 100644
--- a/code/ACLoader.cpp
+++ b/code/ACLoader.cpp
@@ -176,7 +176,8 @@ void AC3DImporter::LoadObjectSection(std::vector<Object>& objects)
 		light->mAttenuationConstant = 1.f;
 
 		// Generate a default name for both the light source and the node
-		light->mName.length = ::sprintf(light->mName.data,"ACLight_%i",mLights->size()-1);
+		// FIXME - what's the right way to print a size_t? Is 'zu' universally available? stick with the safe version.
+		light->mName.length = ::sprintf(light->mName.data,"ACLight_%i",static_cast<unsigned int>(mLights->size())-1);
 		obj.name = std::string( light->mName.data );
 
 		DefaultLogger::get()->debug("AC3D: Light source encountered");
diff --git a/code/Subdivision.cpp b/code/Subdivision.cpp
index 21cc30aa0..252c842e9 100644
--- a/code/Subdivision.cpp
+++ b/code/Subdivision.cpp
@@ -177,7 +177,8 @@ void CatmullClarkSubdivider::Subdivide (
 	// point meshes are simply passed through.
 	for (size_t s = 0; s < nmesh; ++s) {
 		const aiMesh* i = smesh[s];
-		if ((i->mPrimitiveTypes & aiPrimitiveType_LINE|aiPrimitiveType_POINT)==i->mPrimitiveTypes) {
+		// FIX - mPrimitiveTypes might not yet be initialized
+		if (i->mPrimitiveTypes && (i->mPrimitiveTypes & (aiPrimitiveType_LINE|aiPrimitiveType_POINT))==i->mPrimitiveTypes) {
 			DefaultLogger::get()->debug("Catmull-Clark Subdivider: Skipping pure line/point mesh");
 
 			if (discard_input) {
@@ -296,7 +297,7 @@ void CatmullClarkSubdivider::InternSubdivide (
 	// face points and original points. Every edge exists twice
 	// if there is a neighboring face.
 	// ---------------------------------------------------------------------
-	for (size_t t = 0, n = 0; t < nmesh; ++t) {
+	for (size_t t = 0; t < nmesh; ++t) {
 		const aiMesh* mesh = smesh[t];
 
 		for (unsigned int i = 0; i < mesh->mNumFaces;++i)	{
@@ -342,8 +343,8 @@ void CatmullClarkSubdivider::InternSubdivide (
 		// faces in the mesh. They occur at outer model boundaries in non-closed
 		// shapes.
 		char tmp[512];
-		sprintf(tmp,"Catmull-Clark Subdivider: got %i bad edges touching only one face (totally %i edges). ",
-			bad_cnt,edges.size());
+		sprintf(tmp,"Catmull-Clark Subdivider: got %u bad edges touching only one face (totally %u edges). ",
+			bad_cnt,static_cast<unsigned int>(edges.size()));
 
 		DefaultLogger::get()->debug(tmp);
 	}}
diff --git a/code/TextureTransform.cpp b/code/TextureTransform.cpp
index 4bb8f0263..d721ae799 100644
--- a/code/TextureTransform.cpp
+++ b/code/TextureTransform.cpp
@@ -359,7 +359,7 @@ void TextureTransformStep::Execute( aiScene* pScene)
 
 		inChannels += mesh->GetNumUVChannels();
 
-		if (!mesh->mTextureCoords[0] || trafo.empty() ||  trafo.size() == 1 && trafo.begin()->IsUntransformed()) {
+		if (!mesh->mTextureCoords[0] || trafo.empty() ||  (trafo.size() == 1 && trafo.begin()->IsUntransformed())) {
 			outChannels += mesh->GetNumUVChannels();
 			continue;
 		}
@@ -371,10 +371,11 @@ void TextureTransformStep::Execute( aiScene* pScene)
 		unsigned int untransformed = 0;
 
 		MeshTrafoList::iterator it,it2;
-		for (it = trafo.begin(), it2;it != trafo.end(); ++it,++cnt)	{
+		for (it = trafo.begin();it != trafo.end(); ++it,++cnt)	{
 
-			if (!(*it).IsUntransformed())
+			if (!(*it).IsUntransformed()) {
 				need = true;
+			}
 
 			if ((*it).lockedPos == AI_TT_UV_IDX_LOCK_TBD)	{
 				// Lock this index and make sure it won't be changed
@@ -439,8 +440,8 @@ void TextureTransformStep::Execute( aiScene* pScene)
 		if (size > AI_MAX_NUMBER_OF_TEXTURECOORDS) {
 
 			if (!DefaultLogger::isNullLogger()) {
-				::sprintf(buffer,"%i UV channels required but just %i available", 
-					trafo.size(),AI_MAX_NUMBER_OF_TEXTURECOORDS);
+				::sprintf(buffer,"%u UV channels required but just %u available", 
+					static_cast<unsigned int>(trafo.size()),AI_MAX_NUMBER_OF_TEXTURECOORDS);
 
 				DefaultLogger::get()->error(buffer);
 			}
@@ -467,7 +468,7 @@ void TextureTransformStep::Execute( aiScene* pScene)
 
 			// Write to the log
 			if (!DefaultLogger::isNullLogger())	{
-				sprintf(buffer,"Mesh %i, channel %i: t(%.3f,%.3f), s(%.3f,%.3f), r(%.3f), %s%s",
+				sprintf(buffer,"Mesh %u, channel %u: t(%.3f,%.3f), s(%.3f,%.3f), r(%.3f), %s%s",
 					q,n,
 					(*it).mTranslation.x,
 					(*it).mTranslation.y,
@@ -550,7 +551,7 @@ void TextureTransformStep::Execute( aiScene* pScene)
 	if (!DefaultLogger::isNullLogger())	{
 
 		if (transformedChannels)	{
-			::sprintf(buffer,"TransformUVCoordsProcess end: %i output channels (in: %i, modified: %i)",
+			::sprintf(buffer,"TransformUVCoordsProcess end: %u output channels (in: %u, modified: %u)",
 				outChannels,inChannels,transformedChannels);
 
 			DefaultLogger::get()->info(buffer);
diff --git a/workspaces/vc9/assimp.vcproj b/workspaces/vc9/assimp.vcproj
index a7875960d..ed77dc593 100644
--- a/workspaces/vc9/assimp.vcproj
+++ b/workspaces/vc9/assimp.vcproj
@@ -1235,6 +1235,14 @@
 					RelativePath="..\..\include\aiCamera.h"
 					>
 				</File>
+				<File
+					RelativePath="..\..\include\aiColor4D.h"
+					>
+				</File>
+				<File
+					RelativePath="..\..\include\aiColor4D.inl"
+					>
+				</File>
 				<File
 					RelativePath="..\..\include\aiConfig.h"
 					>