Hmm, the old menus are working fine for me, are you getting any errors in console?
I got these errors in my server console-- they all seem to be related, but I don't know if it's a fault in Garry's code or not:
includes/extensions/string.lua:33: bad argument #1 to 'find' (string expected, got nil)
ERROR: Hook 'ULXDoCfg' Failed: includes/extensions/string.lua:33: bad argument #1 to 'find' (string expected, got nil)
Removing Hook 'ULXDoCfg'
ERROR: Hook 'ULXInitPlayer' Failed: includes/extensions/string.lua:33: bad argument #1 to 'find' (string expected, got nil)
Removing Hook 'ULXInitPlayer'
EDIT: Also, I get that first error right after ULib/ULX is done initializing, it seems.