I don't know if, but this was what was my problem. I was always using a no cd crack, but i could never play online, so i bought a lagitament copy, and still used a no cd crack, but i still got the same error. To play online or against bots, you have to play with the cd in, don't know if the game can still have the cracks applied or not. Doesn't matter if the copy of the game is lagitament or not, you can use a back up if you created one. God knows i've had to. I hope that helps everyone who can't play online.