Are you running the official or a custom client like Plutonium ?
This means your Multiplayer or Zombies update files are broken. If using third-party clients like Plutonium, use their launcher's built-in repair tool to update your game scripts. If you would like to pinpoint the problem further, tell me: black ops 2 sound bank failed to load cmnrootenglish link
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Go back to the redist folder, open the folders, and run the executable files to repair your Visual C++ installations. Restart your PC. 5. Clean Install on the Primary OS Drive BO2 cmnrootenglish fix