you're not going to like this but you might have to reinstall to get python back, poser4 used version 1.5.2, poser5 has version 2.2.1, unless....... go to www.python.org, download the latest version & install it, then copy everything into the python folder in poser5 runtime, that might fix it without having to reinstall poser. just don't blame me if it doesn't work & you have to reinstall poser anyway. Rob