If all else fails and the "ISDone.dll" error persists, the environment of a standard Windows session might be too crowded. Boot Windows into
Turn off Windows Defender; use the 2GB/3GB RAM limiter option in setup. Lack of storage space or permission issue dodi repack install error
Before you rage-delete the 80GB folder and wait 12 hours for a re-download, verify you have done of this: If all else fails and the "ISDone