My brother and I share an account across a couple of Xbox’s. I’d be playing the ODST DLC and he’d log me off occasionally. Now, I can’t load a single mission from the game. I’ve tried restarting the Xbox, quitting the game (now many times), reinstalling the DLC, and playing other games in the MCC. All except the DLC work fine. What’s going on and how can I fix this??
Try reinstalling the game.