X11 configuration does not work after autoinstall

Hi, I installed SuSE 8.0 with autoinstall from an NFS Server and it worked fine. The only problem is when I start to configure X11 (yast2 x11), the X server configuration starts and stops after a second again, I can't do any changes . yast x11 also doesn't work. When I install the System from DVD or CD (interactive) , i don't have any problems with the X11 configuration. Any ideas ? Thanks for help, Martin