Ok whenever i try to add a gametype it keeps on saying Unkown function so i looked at mod menus with gametype and works and learned from there aka Nightmare v3 GRAVY v3 then it keeps on saying uknown function please help

Download of mod menu : http://www.mediafire.com/?nq796q79yb2no4q

I Added Ghost Vs Humans and Shotgun Vs Snipers (I tried only Ghost Vs Humans First and it still didn't work)