Hi it sounds like it could be a few things. I suggest redownloading the game (the base game and Beyond the Bet), and deleting any old files you have. If you're using an old save file to play the new DLC, please either delete your old saves or do not use them. Start again from the start and get back to Beyond the Bet and try saving. If that still has an error, please email the details to support(at)twoandahalfstudios(dot)com.