Map won't play?

[Fury]

I have an Windows XP and I got the Full Version game for free from Extrememodsclan.webs.com and I downloaded the latest maps and putted them in the right foler. Mission and MP. That's what I did. When I joined a server in GameRanger, I played the Custom map but took me back and It said "Error, The operation has completed sucessfully" That's not right. I want to be able to play these maps again. Help

[E]x[F-Sniper]

Well I don't even know what maps you are talking about when you say "the latest maps" there is many map packs out there.