I had one of those corrupt pz3 files once, I loaded it into Poser and as soon as it finished loading, it would just start automatically render by itself. And when it finished rendering and it would start all over, rendering again, and I couldn't break this operation, you know, so I can save the pz3 file, no matter what I tried. I just had to give up on that pz3 file and go to the previously saved file. It's just not worth the time.