I have P5 and Windows XP- I have no problems, I repeat no problems, rendering animations. I find P5 much better than P4 and SR3 fixed the AVI texture problems which was my only real complaint. Sorry TalonGE, I suspect there's something wrong with your system, not Poser 5- and I think you should follow ceba's advice. Wipe your system, reload Windows and then Poser 5 and see if it works. If it doesn't, flame away! I suspect Poser 5 runs for the majority of people who bought it, whom you don't hear from because they are happy with it. By the way, have you told CL about the problems you are having. I did that with the AVI texture problem, they asked me to send them an example, which I did, and there was a fix for it in the next release.