I had a similar problem with Poser figures plus .obj files into Bryce 4 too. Yesterday had a poser figure with .obj prop made in RDS and reworked in Amorphium, all grouped in Poser 4 and exported to Bryce 4, and got the error message in Bryce 4, though it went into Bryce 3 easily enough, and it also opened in Bryce 4 as a Bryce 3 file, though it would not save changes to Bryce 3. Just straight RDS exported as obj. and reexported from Amorphium, also as .obj. Straight P4 figure. No morphs or other mesh or anything like that. Trouble is: I have done essentially the same thing successfully into Bryce 4 before. Just got Bryce 4 about a month ago, and have been keeping 3 and 4 work separate but the glitch in 4 seems to do with groups of objects from Poser, and not just groups of different type object files. Anyone get this problem with strictly Poser plus .obj groups? I'm trying to work by process of elimination to see what the problem is. Bryce 4 is great improvement in some areas, but there's some strange things going on here and there it seems. Any help or clues out there? The irritation is that sometimes it happens, sometimes it don't, as far as I can see.