Mac Gaming Mods

I am baned from GameRanger, and I don't know exactly to why I was baned. I can't host a game in COD, but I can play single player just fine. I normally just join a server, but I want to host a game myself, cause a couple of buddies bought the game. ( i wana play 'em + i got cable modem)

It seems that I can't host a Call of Duty game anymore. I have the version 1.4 patch for the game, but I don't know if thats the problem. When I try to host a game, it shows some text saying that there was a " script error". So, If anyone could help me, that would be much appreciated.

Have any suggestions?