Well bryce is the problem with inporting because i tried the same mesh in a cutdown version of cinema4d and it works fine, i think bryce has problems with models that are very detailed which my meshes tend to be after i build them in rhino2, i have to lower the polys anyway because the meshes are so big but im sure if i fiddle with different settings then it will import ok, sooner or later, its just a real pain having to mess about like this. i might start looking for another renderer.