I knew what I was in for before I bought it. I downloaded the tester and it failed and I remember seeing post about it not work right in XP. I don't want anyone to think I'm Unhappy with it I think it is one of the most usefull poser apps. I've bought. It just seems like it must be something simple everyone is overlooking. because in win9X based oses poser is able to share it's library files but in XP/NT it is'nt so I'm thinking it must have something to do with that. It seems XP is not allowing it to share it wants to be greedy. Again I love the program and bought it knowing it would'nt work but still love it.