: Instead of double-clicking, right-click the file, select Show more options , hover over 7-Zip , and choose Extract Here . How to recover corrupted 7z archive
C:\Users\[Your Username]\AppData\Local\AcTools Content Manager\Plugins\7Zip . Unknown RG.7z
If you are seeing this error while trying to install mods (like cars or tracks), follow these steps to manually link 7-Zip to the Content Manager: : Instead of double-clicking, right-click the file, select
: Go to the default installation path, usually: C:\Program Files\7-Zip . : Ensure you have the latest standalone version
: Ensure you have the latest standalone version installed on your machine.
If the error "Unknown Format or Damaged" appears when you try to open the file normally, the archive itself may be corrupted or created with a newer version of the software.
Note: If the "7Zip" folder doesn't exist under Plugins, you may need to create it.