Taura, Poser does the same thing on my PC. I have to reboot my pc to be able to use Poser again. Everyone, I received an email back from Todd at CL. He is going to forward my email to Larry and the design team. He is looking into the problem and will post a reply here. Some users have mentioned in the past that Poser needs continuous space the poserTemp file that is created. I ran Windows Defrag to defrag my hard drive. I have Norton Utilities and usually use Norton SpeedDisk to defrag my hard drive, but SD can leave small areas of empty clusters. Does anyone else use Norton products?