Master

Ok, used Shift+start MP to deactivate it. Im going to just buy another key and see if that fixes it. It was the BS2 upgarde that did not show up. I deactivated it and was able to get into MP so BS2U was the problem. Im going to just buy another key instead of trying to contact him and having to wait to play... lol. Thank you for the help guys.

http://www.digitalcombatsimulator.com/en/faq/?wiki_name=Multiplayer Ok, so I need to buy the upgrade myself then... so how do I unlink that serial key from my account since it is not listed on the serial key page. http://www.digitalcombatsimulator.com/myserials.php

I went to install BS2 (upgrade) into DCS World and when I go to log in it gives me the error "Invalid Serial Number" and then refuses to let me log into. I own P-51 through ED webpage, a10 and bs1 through steam and then BS2 was a gift from a friend. It registered the cd key just fine and said I still have 10 unlocks but then it invalidates when I go to log in for MP.