so guys a couple of days ago I bought Arma combined operations so I could play dayz which I really like and want to play on my computer. (I usually play on my friends computer) so I downloaded everything on my steam. Arma 2, Arma 2 operation arrowhead, and the beta version of operation arrowhead. all of those come with Arma 2 combined operations. so after I downloaded the games I downloaded days. I launched the game and tried to join a server. and each time it would say bad version server rejected. so I would try to join a couple of other servers and sometimes I would join but after it loads it puts me back to the main menu. I'm not sure if its because I don't have the right content or if its because I don't have the right version if someone could please help me that would be great thanks.