percypants (DayZ)

BTW Sula, I checked Amazon, and Meridian4 sold the game to me, but the key for normal Arma 2 worked.

Dear MacabreLlama99, I did not change my CD key to a nonexistent one. I have entered my real one in every place I was supposed to. Dear Orlok, I purchased this from Amazon, but it is the full normal game. Dear liguidmind, I bought this with Amazon and I have run both. Dear Sula, This is the full version of the game, but thanks for the wishing of luck! ;)

Okay, so I just bought Arma2 Combined Operations off of Amazon the other day, entered the keys in for both Arma 2 and Arma 2 Operation Arrowhead, and everything was working fine. Both games were launching. But then, when I tried to launch a DayZ game, it said I had the wrong version of Operation Arrowhead. (By the way, I installed DayZ). So, I looked up the problem on the internet and it said to use the beta updater tool. So I used it. But at the very end, it said "Wrong CD key". And, whenever I tried to launch Operation Arrowhead, it said "Bad serial number given during Setup". So I lookedup THIS problem. I finally found a solution for it when it wasn't installed through Steam where I open Regedit, and navigate to Bohemia Interactive Studio. I tried to edit the key in Arma 2 OH, but it said I didn't have permission. So I messed around with the permissions, and it finally let me edit the Key. So I changed the key, launched Operation Arrowhead, and it popped up with "Bad serial number given during Setup". I went as far as to contact Bohemia Interactive about this problem. But they never did get back to me. I am so fed-up that I am getting to the point of almost returning the game, (if I can; it was a downloadable file, not on disk) so PLEASE HELP ME!!! And by the way, I have Windows 8.