Are you running the port of ULib/ULX for Gm10?
Or are you trying to run old versions MEANT FOR GMOD9?
?
GMOD 9 scripts WILL NOT WORK with GMOD 10.
<*gets off soap box*>
Sorry. If you're running the port Megiddo did, my apologies.
I'm tired and frustrated with all the people who expect or don't know that Gmod 10 lua and code are 95% different than Gmod 9, even though there have been hundreds of Garry.tv and Facepunchstudios.com posts stating that they won't work.
See
http://forums.ulyssesmod.net/index.php/topic,563.0.html if you haven't got our port.
Its a wee bit buggy, but should suffice until we do a proper release.