It seems the new steam update doesn't want to let AMXX work with Team Fortress Classic servers.
Is this a problem for anyone else on other games too?
EDIT:
Just tested AMXX on a CS server and it seems to work fine.
EDIT2 (FIXED):
Got this problem fixed. My liblist.gam file got replaced during the update. So if anyone else is having a problem getting AMXX to work with their server be sure to check that your liblist.gam file is pointing toward the metamod dll.