My friends and I are trying to play Dawn of War: Dark Crusade but the two of them have found that they cant join any game that the other one is a part of. They do not have this problem with any other match, only when the other player is in the lobby. Any ideas why this might happen? Thanks so much!

Video Game Consoles & Games - THQ - Warhammer 40000: Dawn of War: Game Of The Year PC for...