bad serial number

[david.mcentee@live.co.uk 46]

hey guys when i join any server it says:

badserial number. and i cannot join.

whats going on? please help!

[A Metal Viking 18]

I had this problem, try either using a different launcher, like DayZ commander or Six Launcher. If that does not work go into your games directory and launch the game from the 'beta' launcher, Program Files (x86)\Steam\steamapps\common\arma 2 operation arrowhead. you should find it in there or wherever your directory is.

[Sgt.Asshat 607]

try running arma 2 and OA separately, then try joining a server

[chipdemon@yahoo.com 57]

try running arma 2 and OA separately, then try joining a server

This^