The "unarc.dll error code 11" typically occurs when the installation process of a DODI Repack encounters a problem while trying to extract or install files. The error is often related to issues with the repacked files themselves, rather than the user's system. Some possible causes of the error include:

Lack of enough free disk space on the target drive or low Virtual Memory (Page File) .

: Install to a simple folder like C:\Games instead of deep folders like C:\Users\Downloads\Games .