Below is a draft post you can use to help others resolve this issue.
You'll need to find where Call of Duty: Black Ops 2 is installed on your computer. Buddha.dll For Cod Black Ops 2
Beyond its standard function, Buddha.dll is frequently discussed in "crack" or "repack" communities. Developers of third-party launchers often modify or replace this file to bypass Digital Rights Management (DRM) Below is a draft post you can use