If you downloaded a packaged edition of the game, it often includes a built-in folder called _Language Switcher to compress file sizes. The game will throw the cmn_root error if these regional sound files are not in the root directory.
Sometimes the error surfaces because modern operating systems fail to unpack older legacy asset file structures (DirectX 9.0c / 11 dependencies). black ops 2 sound bank failed to load cmnrootenglish best
Steam will re-register the download pathing error and download the omitted cmn_root.english audio directories. If you downloaded a packaged edition of the
Even if you have the correct version, your game files can become corrupted. This could be due to: black ops 2 sound bank failed to load cmnrootenglish best