Cannot play Ascension or Call of the Dead - "Error - Downloadable Content Has Changed" ...before people start giving the same damn troubleshooting steps, I have spent the last three hours clearing my cache of Black Ops DLC (First Strike and Escalation) and Title Updates and re-downloading them in every possible order, restarting my console, and trying a different copy of Black Ops. I called Microsoft Support on the slim chance they would help, spoke to a guy named Warren who's system was down (THEN WHY THE HELL DID YOU PICK UP THE PHONE TO HELP A CUSTOMER?).
Its a god damn shame there are no laws regarding getting your money back for downloadable digital media. Thanks for the help Microsoft...not.