So I downloaded ARMA 2 off of Steam, but when I attempt to start the game I get the error:
Bad serial number given in setup.
I've tried deleting the game and then redownloading it, verifing the cache files (before and after redownload), and I also followed the link given about this problem near the beginning of the thread.
Unfortunately, nothing has worked, and I still get this same error every time I try to start the game. I made a thread on the Steam forum, but I've yet to receive a reply after 24 hours.
Help is appreciated.
