Couple of other things that sometimes help when poser seems crash-prone on a specific system; De-Frag the hard disk. Make sure no other apps or processes are running in the background. Make sure the Poser 4.03 update is installed (free from Curious Lab's Web Site to Poser 4 owners). If you're running Win98, try running the Run->AFC utility to restore any system files that may have gotten overwritten by other programs. If you have Norton Utilities, try running the Registry checker. On Windows systems there's quite a list of things that might be causing it that have nothing to do with Poser directly.... I've also been able to Re-Install Poser on top of itself without de-installing in the past. Good luck with the problem.