brettuk 1 Posted August 23, 2012 Hi,I just recently Installed Dayz and I followed this:1. Download both ARMA 2 and ARMA 2: Operation Arrowhead through Steam2. Open both of the games to allow them to install the required files, then close them3. Download all of the DayZ Mod files into a folder (this is now only 1 file, rather than 7)4. Make a folder named "@DayZ" in C:\Program Files (x86)\Steam\steamapps\common\arma 2 operation arrowhead (or your Operation Arrowhead base folder)5. Then make a folder inside "@DayZ" named "Addons"6. Paste all of the downloaded files inside the "Addons" folder7. Extract all of the downloaded files8. Go to Steam and right click, properties, set launch options on ARMA 2: Operation Arrowhead9. Insert "-mod=@dayz -nosplash" and click OK10. Open Operation Arrowhead and select to "Launch ARMA 2: Combined Operations"When I try to connect to Operating Arrowhead it gives me an error and closes instantly "Bad Serial code given at startup" or something along them lines.Am I doing this correctly? I've purchased my game off steam. Share this post Link to post Share on other sites