Edit: Problem fixed!
How to fix:
At the dashboard under the "My Xbox" tab, go to "System Settings" and then go to "Memory", Select your storage device, select "Games", find "Call of Duty: Black Ops", and delete "Call of Duty 7: Black Ops Title Update #11"
How to fix:
At the dashboard under the "My Xbox" tab, go to "System Settings" and then go to "Memory", Select your storage device, select "Games", find "Call of Duty: Black Ops", and delete "Call of Duty 7: Black Ops Title Update #11"