I'm having the same problem. I have tried the beta build you guys have provided, and in DayZ Commander, and even re-installed Arma II AND OA, and it keeps saying wrong CD Key, and if I click ok, it says successfully updated to 1.62 not 1.62.103718. I'm very frustrated about this, and I'd like to find out how to fix this. I can't take Gyazo pictures because they won't come out for some odd reason, but anywho it says Wrong CD Key then I click ok and then after clicking ok it says,"Please be patient. This update may appear to take a long time to complete. It is updating and installing very large data. Verifying ArmA2 OA, version 1.62...ArmA2 OA patch 1.62 has been applied successfully." when I launch the 103718 updater, not 1.62.