technoatom: I can't get it to run at all and I can't get the ArmA 2 MP itself to even work. I always get error messages and "Your CD-Key is disabled" errors... What the heck is wrong with your version of this game? If this problem can't be resolved how do I get a refund so that I can buy a version that will work?
I did follow the tutorials step by step that you guys have listed on the stickies. Still no luck.
Need to work the stock version before the mods. Have you added your serial number to the stock game yet? The number that appears in your Arma II download section in Your Accounts?
If not, go to your GOG account and copy the serial key number GOG provides you in your Arma II download section. Then go to the Arma II game folder and click on/run arma2serial.exe and then paste the serial number in to the provided window and click on the Insert Serial Key. That should make your game unique and original to the game servers.
For DayZ, I used DayZ Commander, and the program had the utility to patch Arma II and install DayZ found under the install/update tab.