to fix the link:
remove "http://" from the front.
I hate that installer!
With that many options to understand, you shouldn't need an installer...
OK, here's your problem:
you need "AMX mod X" for czero!
The installer you linked to above installs "AMX mod" by OLO, which has been abandoned for the most part...
And the amx modules may not be set up correctly. It's been a while since I used AMX (not AMX-X). They're setup differently...