Again, basebans.smx doens't interfere with admin permissions at all. It is removed, so it doesn't try to add a "Ban player" option to the admin menu too, because there can only be one named like that at the same time.
Make sure basebans is disabled.
To get the web kicking and view profile stuff working again, check this revision. I don't have a tf2 server, but i think this should work.
https://code.google.com/p/sourcebans...e/detail?r=163