Hello, For some reason some strange things happen on our workstation cluster. We have a setup with a windows2003 file server against which users have to authenticate. I went for the simple solution: - install pymol as administrator (locally) on the xp workstation - and it will fire up fine - log off and log back on as user (now authenticating against the server) - pymol blinks quickly and dies - now, reproducibly, i can not even as administrator get it to work again until i have completely restarted the machine Any ideas ? I was trying to avoid having to create individual user accounts on all our windows workstations ... Yeah i know, windows ... Still, i would like to get it to work ... Greetings Ingo