NiGeometry::BindSkin now throws an exception if one of the passed in bone references is NULL.

NiNode::IsSplitMeshProxy now returns false if it is a skin influence.
NiTriShapeData::GetTriangles now only returns valid triangles.

src/obj/NiGeometry.cpp

@@ -99,6 +99,9 @@ void NiGeometry::BindSkin( vector< Ref<NiNode> > bone_nodes ) {
 	ancestors[bone_nodes.size()] = ListAncestors( GetParent() );
 	
 	for ( unsigned int i = 0; i < bone_nodes.size(); ++i ) {
+		if ( bone_nodes[i] == NULL ) {
+			throw runtime_error("Attempted to bind skin to a NULL bone reference.");
+		}
 		NiNodeRef bonePar = bone_nodes[i]->GetParent();
 		if ( bonePar == NULL ) {
 			throw runtime_error("Attempted to bind skin to a bone with no parent.  A skeleton root cannot be a bone so all bones must have at least one parent.");

src/obj/NiNode.cpp

@@ -227,11 +227,16 @@ void NiNode::PropagateTransform() {
 
 bool NiNode::IsSplitMeshProxy() const {
 	//Let us guess that a node is a split mesh proxy if:
-	// 1)  All its children are NiTriBasedGeom derived objects.
-	// 2)  All its children have identity transforms.
-	// 3)  It has more than one child
-	// 4)  All meshes are visible
-	// 5)  ????  May need more criteria as time goes on.
+	// 1)  It is not a skin influence
+	// 2)  All its children are NiTriBasedGeom derived objects.
+	// 3)  All its children have identity transforms.
+	// 4)  It has more than one child
+	// 5)  All meshes are visible
+	// 6)  ????  May need more criteria as time goes on.
+
+	if ( this->IsSkinInfluence() ) {
+		return false;
+	}
 
 	if ( children.size() < 2 ) {
 		return false;

src/obj/NiTriShapeData.cpp

@@ -66,7 +66,15 @@ bool NiTriShapeData::HasMatchData() {
 }
 
 vector<Triangle> NiTriShapeData::GetTriangles() const {
-	return triangles;
+	//Remove any bad triangles
+	vector<Triangle> good_triangles;
+	for ( unsigned i = 0; i < triangles.size(); ++i ) {
+		const Triangle & t = triangles[i];
+		if ( t.v1 != t.v2 && t.v2 != t.v3 && t.v1 != t.v3 ) {
+			good_triangles.push_back(t);
+		}
+	}
+	return good_triangles;
 }
 
 void NiTriShapeData::SetTriangles( const vector<Triangle> & in ) {