This shouldnt be an A6 specific problem. Im wondering if the bmap_to_uv/bmap_to_normals are converting the internal texture to a format not supported by nVidia cards. I have a dll that will return the texture format when passed a bmap. When I get a chance, Ill see which format is used, and what other formats are available, and if possible, if i can convert to the others. If it works, I might need a test subject with an nVidia card to try it out.