Hello, I am a friend of Xen's, and we've been working together on getting models in game. I have a similar problem to his, in that the model seems to lost all smoothing group data. I work with 3DS max, so I'm not sure if the exporter supports this. He uses Blender (which I do NOT like, by the way), so I was wondering if you could tell us exatly what you mean? We're a bit new to this, so be kind please