I take it you've never tried to use Grouper on a Rhino-exported .obj? For some reason it doesn't see the material names either. (Mind you, I haven't tried to see if v1.2 has the same problem.) I have a clunky solution, but it's better than anything else I've been able to do. 1) Export .obj from Rhino. 2) Import to Poser. 3) Export .obj from Poser. 4) Run through Grouper. 5) Import into Bryce. At least you only have to do it once. There is an added problem that sometimes Poser alters the geometry a little, typically adding a slight curve to flat surfaces.