Did you read the ulx_readme and ulib_readme.txt in your server /addons/(ulib or ulx)/ folder?
Where did you download ULib and ULX from?
Do ULib (and ULX after) show loading in the SERVER console at SERVER start up?
What errors if any do you get if you type !menu (server or game)
Do you get a different error in console if you use "ulx menu" in console rather than !menu in chat?
What errors appear on SERVER while ULib tries to load?
What errors appear on SERVER while ULX tries to load?
If you get errors about access denied, does Gmod recognize you as an admin?
PS - Please, for the love of (my God, your god, your family, whomever you wish to love), please, when posting in ANY forum (not just ULYSSES), don't say 'help me' as a forum subject.
Be more descriptive. "Trouble with install" or "getting error ..."
Most help forums already KNOW you're asking for help. Mmkay...thanks.