What do you mean with wasn't user the arma 2 beta? I just bought the arma 2 combined pack' date=' runned the game once and used the six launcher to install the mod. But for some reason I also get this error? Anyone knows how to fix this? [hr'] I just found this thread that also says I need to run it in beta mode? http://forums.steampowered.com/forums/showthread.php?t=2766410 But when I go to the Arma arrowhead folder in steam there is no beta patch thingy?