Right-click on (it is recommended to do this for all three: Singleplayer, Multiplayer, and Zombies). Select Properties > Installed Files . Click Verify integrity of game files .
If the configuration is correct but files are missing, Steam can automatically redownload the "cmn-root.english" asset. Open your .
The error in Call of Duty: Black Ops 2 typically occurs because the game is trying to load sound files for a language that is either missing or incorrectly configured in the game files. This is most common in versions of the game that support multiple languages (like Polish/English or Russian/English) where the English language pack was not fully downloaded or the configuration file points to a different language. 1. Fix Configuration via localization.txt
If you are using a repack or specific regional version, the game may include a dedicated tool to fix this. Open the game's main installation folder. Look for a folder named _Language Switcher . Open the English folder inside it.
The first word is likely "polish" or "russian." Change it to . Save the file and restart the game. 2. Verify Game Integrity on Steam
Sometimes the language selection menu "bugs out" and requires a manual refresh to trigger the download.
The most frequent cause is a simple text mismatch in the game's root folder.
Wait for Steam to detect and download any missing language assets. 3. Use the Built-in Language Switcher
If the sound banks are in the wrong subfolder, the game won't see them.