If you are using a version of the game that includes a _Language Switcher folder:
Navigate to your Black Ops 2 installation folder (e.g., C:\Program Files (x86)\Steam\steamapps\common\Call of Duty Black Ops II ). Black Ops 2 Sound Bank Failed To Load Cmn-root.polish
If the first word in the file is , change it to "english" . Save the file and try launching the game again. 2. Rename Sound Bank Files If you are using a version of the