Actually, I think the advisory I read on their website (which appears to be gone) said that they test their products fully on Poser 4 but not on Poser 5. Also, I found this tidbit on the Daz3D forum-- the Poser 5 face room is not compatable with Daz3D figures. Of course, the Daz3d faces are so fabulous that they don't really need the face room. I saw a free prop out there (which I promptly downloaded) which is a skull cap for Daz characters. I think it's a method of allowing them to grow hair in Poser 5. Also, I think I read that dynamic clothes don't work on Daz characters, though it might just be a misunderstanding. BTW, I was just trying to figure out the P5 Materials room. WTF???