Well, none of this fixed my problem. I deleted my preferences. I went to defrag my hard drive but it didn't need it (I do it at least twice a month anyway). I cleaned up old registry entries (the program I used showed me what they were and I knew what programs they used to be attached to). I even rebooted after all that.

No go. When I opened poser for the first time (after a reboot this time, mind), I needed to reset my preferred state. When I went to delete Simon, it froze up again on the confirmation. I just read another thread with someone else having the exact same problem. What in the world is going on with Poser?