Quote - Have you downloaded the 3ds from some place? so I can test to see which is the problem.

It was the laboratory model that used to be at 3D Cafe - I think it was originally distributed with 3D Studio, in the pre-Max days, but I don't have any terms of use for it so can't pass it on. If I find something readily available that has the same effect I'll send you a link.

Quote - You must check the "by group" option and then select one group or material from the listbox.

Ah, got it, thanks. Since the list box defaults to showing everything, the "by group" option would seem to be superfluous - in other words, it wouldn't matter if it was turned on all the time?