same thing here, the strangest part is that multiplayer and the contest worked for a few hours before giving the serial error. I wonder if there's anything to do with the unified account they use in this site, because before it stopped working I had logged in here just to be annoyed with that merge ...

hello, bought the steam version today. I was able to register earlier and used the enter to win button which logged me in multiplayer. Only to later find this thread, but now hours later i'm getting a error (the serial number is not registered to your account) both when trying multiplayer or the con...