Well, I hate to piggyback this thread, but seeing as someone here might be more helpful than the schtserv forums. Anyone know what might cause the 903 error on a Windows 8 pro 64bit. I have disabled AV and checked firewalls, reinstalled, changed admin and compatability mode settings numerous times, and moved the installed directory to another machine running Win7 and it works there. Every now and then I like getting on to Schthack, but it requires me to change computers unlike Ultima which I can stay on my best computer.