I would update the video drivers anyway. (fixes 90% of crashes) If that is not it then a reinstall might be in order, be sure to back up your files and empty the P6 folder (it may be a bad file, most likely in the prefs folder), be sure nothing is running in the background when you reinstall (virus, firewall, spyware or detectors) Contact EF give them all the info you gave us plus details about the crash (does it take the OS down too, do you have to use task manager to end poser, any error messages, crash is a very general term and could mean a lot of things) Good luck.