Well, I just tried it, and "Yes" the files will upload, but ONLY, if you did not, "Uninstall" Poser4. I didn't, only because my time is limited, and I have enough frustrations in my life, and I Wanted, something, that I could, Fall back on. I know Poser4, enough to be comfortable, but Poser 5??? Even though, the files, (all my poser files, in fact) NOW, say or depict the Poser5 icon, it does work. Just don't, un-install, Poser4, and I think you will be OK! (: Genny