I used to get these types of problems, too. I tried reinstalling Poser as someone suggested, but it didn't work. I thought it would never get better. But I upgraded my 13 GIG hard drive to a 40 gig and after that it fixed the problem. The only thing I could think was that maybe I didn't have adequate space on my C drive (I had about 140 megs at the time!) or maybe my hard drive was so old (2.5 years) that it had problems that defrag wasn't fixing. If you have a new hard drive with plenty of space, though, I don't know what to tell you. That's just what seemed to fix my problem.