Sometimes crashes happen in P8 when the preference files become corrupt. You find them in:

C:Documents and SettingsUsernameApplication DataPoser8.0

Obviously the folder that I've stated as Username will be your name. Delete the .XML's and the preferred state.pz3. You have to have hidden files visible in order to see the folders.

Restart the computer and see what happens. If that doesn't clear things up then try looking in the General Preferences in Poser and uncheck where it says Use Binary Morphs if it is checked.

These where solutions that Smith Micro suggested and they have both worked for me

CHEERS!