// TEMPORARY (For debug - if I somehow leave this in the release version I'm going to feel so stupid)
exec("./eval.cs");
I think you forgot something.
Just got rid of that. Thank god I noticed it quickly.
Redownload, should be gone.
EDIT: Something I'm also worried about: those looking to make maps should ignore the gamemode lists in the sample config files. Those were made when I thought this would have a lot more gamemodes, so anything other than creepageddon and man vs creeper won't work as all gamemodes apart from those never had any functionality added.