Change the language to something else (e.g., French or Italian). Let Steam download a small update. Change it back to . Launch the game to see if the zone error is cleared. Manually Move the Zone Folder

After adding the exclusion, (Fix #1) to re-download any files that were deleted.

If you own the game legally on Steam:

The "zone" error is extremely common after applying the wrong patch. For example, using a on a Update 4 game.

Here is the comprehensive guide to fixing this error so you can get back to the action. Repair Game Files via Steam

Example: C:\Games\BlackOps instead of deep within the SteamLibrary folder.