Sometimes Steam thinks the file is fine, but it isn't.
Sometimes, even after verifying game files, the error persists. This indicates a deeper issue. Download Code-pre-gfx.ff
For players using the Plutonium Project (the most stable BO2 client in 2025): Sometimes Steam thinks the file is fine, but it isn't
Open Command Prompt as Administrator and run: Sometimes, even after verifying game files, the error
chkdsk C: /f /r
(Replace C: with your game drive letter). Bad sectors often corrupt .ff files specifically because they are read constantly during gameplay.