If you're looking for a specific language pack download link, please let me know your platform and region, and I'll try to provide more information.
Your original English localization files became corrupted during installation.
Note: Always scan downloaded .forge or .pck files with antivirus software before moving them into your game folder. How to Install the English Language Pack
HKEY_LOCAL_MACHINE\software\ubisoft\Assassin's creed brotherhood Assassin's Creed Brotherhood Review Released as a direct sequel to Assassin's Creed II Brotherhood