You MUST first get either of the mods to be able to play this map with 4 teams, but most 
important you MUST download the CTF4team texture pack from uncommons site.

CTF4 mod		-	http://www.uncommonplace.com/games/index.html
CTF4team texture	-	http://www.uncommonplace.com/games/ctf4Team.zip
CTF+ mod		-	http://www.planetunreal.com/vortex/ctfplus/ctfplus.html