also there might be an instance of the P6 process already running, after it crashed, and thats why it wont start up again. hit CTRL+ALT+DEL, go to task manager, and see if you have a Poser6.exe (may be P6.exe, not sure) process running. if you see it running, kill it (rightclick, end process) and poser should start up again. still, even if this works, test your memory. everyone should do it - i cant think of anything worse to have in your system than faulty RAM. the test takes 10 min for most users.