Well, I kind of have the same problem, except that I have no Poser content. Here's what happenned: I had a scene in Vue5 Pro Sudio that I wanted to tweak in Infinite, by adding eco-systems. It all worked fine until I decided I needed one more patch of grass to cober a tree base. I dropped the grass from the plant editor and placed it, Vue crashed, reloaded the scene a few times, and finally saved it the way I wanted it. When I tried to reopen it, an error message tells me Vue5Infinite can't open the file... Since it is now populated with eco-system, I can't open it anymore in ProStudio! I run on XP home edition.