Inside the game's menu on Steam, look for the Language tab.
When you see the message it implies the following: black ops 2 sound bank failed to load cmnrootenglish best
Method 2: Verify Integrity via Steam (Best for Official Owners) Inside the game's menu on Steam, look for the Language tab
Allow Steam to scan and replace missing localized data pools. Step B: The Language Dropdown Refresh Trick Inside the game's menu on Steam
How to Fix "Black Ops 2 Sound Bank Failed to Load cmnrootenglish"
Why does the error mention different languages like "cmn_root.polish"?
Paste the copied files directly into the root folder and select when prompted. Fix 2: Change Steam Interface Language