" codmp_s.exe has encountered a problem and needs to close " -1 reply

For some reason when I click on "Join Game" in multiplayer, the game crashes and the windows message " codmp_s.exe has encountered a problem and needs to close " comes up. It was working fine just a few days ago. I've had the same problem before, but I can't remember how I fixed it. Maybe I re-installed the game. But is there another way to fix the problem? The opening multiplayer screen comes up, and I'm also able to play single player :( When i log on to xfire and go to my recently used servers screen...I can still join cod games through that.

Uninstall and then reinstall your CoD game.

Be sure to delete the CoD folder (it has all the files in it, including mods and maps).