I downloaded Arma II free, and bought Operation Arrowhead on steam. I installed DayZ with Six Launcher, but when I try to connect to a server it says: No entry 'bin\config.bin/CfgVehicles/Citizen1.scope'. and it drops me back to the main menu. I think it's because Arama II free doesn't have a cd-key and it can't launch it as Combined Operation. I can buy original Arma II, cheaper than Steam at 576kbyte, but the vendor sad it have a cd-key but I don't know I can install it through Steam. Any idea?