Well, I downloaded the plugin and tried to get things working. I, too, encountered similar problems for quite some time. That is, however, until I discovered that I had the files in the wrong place.
I put things here:
C:\Program Files\Valve\Steam\SteamApps\*username*\source dedicated server\SourceForts
When I should have put them here:
C:\Program Files\Valve\Steam\SteamApps\*username*\source dedicated server\hl2mp
Now all you have to do is change things to your liking.