If you're having trouble with a specific error, I can help you troubleshoot. To give you the best advice, let me know: Are you using Steam, Battle.net, or a specific repack Are you getting a "Disc Read Error" "Missing Localization" Are you trying to save space change the language of a foreign copy?
You download a 15GB repack of MW3, launch the game, and suddenly the menus are in Russian, German, or Polish. The audio is foreign. Subtitles are incomprehensible. You need the English language. call of duty modern warfare 3 english language pack repack