%APPDATA%\XLabs\CEF\ %LOCALAPPDATA%\XLabs\CEF\

%APPDATA%\Northstar\CEF\ %LOCALAPPDATA%\Northstar\CEF\ %TEMP%\cef\

Open , run:

%APPDATA%\CEF\User Data\ %LOCALAPPDATA%\CEF\User Data\

sfc /scannow Then:

Following this guide systematically will resolve the error in over 95% of cases. The remaining 5% are typically due to deep Windows corruption or a bug in the mod itself that requires a patch from the developer.