CaptainSharkFin 10 Posted August 7, 2011 I bought Combined Operations from my nearby Post Exchange and got to installing it as soon as I got home. The initial activation worked and got me through the main installation. Online activation, however, is becoming a pain. I don't know what it is, because it won't let me activate Combined Operations. Apparently, the serial key put onto the case of my game package is invalid. Is anyone else having this issue? I'm living over in South Korea, so it's fairly inconvenient for me to contact support when I would like a solution as soon as possible. Share this post Link to post Share on other sites
