I have XP...no problems..haven't heard of many crashes with XP and Poser...are you talking total crash and burn. lockups, or what ??? which Poser version do you have? All patches applied?

Humankind has not woven the web of life. We are but one thread within it.
Whatever we do to the web, we do to ourselves. All things are bound together.
All things connect......Chief Seattle, 1854