This may sound dumb, but are you sure you are crashing?

I have a really fast computer.  Sometimes, when I render it "looks" like Poser is crashed, poser turns white or light colored, the firefly render box seems to disappear, windows (being stupid) reports "Poser is not responding."  In reality, Poser is working hard doing the render, and using up all of windows resources.  Windows simply reports it as not responding.  It appears windows is being snubbed and windows doesnt like that.  

I found out merely by stepping away from the computer for a bit, and when I came back, so did Poser, with the render completed.

I've done a lot of foolish things, this is just one of them, so don't feel bad if you did it too.

Good luck.