Stick, SHAME!!
Let's try to get SVN users working, THEN perhaps complicate things more by cool addons like XGUI.

Tactical,
first, if you type in game console "ulx menu" then go back to game screen, do you get a menu?
If not, any error in game console?
Any error in server console?
If ulx menu works, Did anything you downloaded monitor chat?
Remember, some things that look for "!<blah>" in chat have a big chance of breaking ulx if the programmer didn't do it right.