April 2, 2010 â€” Did you participate in beta testing with a standard M&B key? Check the Warband key entry in the registry. When the beta switched, it cloned the . bat file. And at that moment, the records of the old key remained in the registry. Then you updated the game and the key changed. After that, the Beta version switched again. Once again. And again. And so on until you upgrade to version 1.0. Find the entry for the old key in the list of keys in the registry as soon as possible. This is usually a .bat file that was created for beta testing. How to find out which version of the game you have installed? Just run the installer to find out the version of the game.