This usually happens if the download was interrupted. Try downloading the file again or using a "Mirror" link if available.
Standard Windows or macOS tools often cannot open .7z files natively. You will need a third-party utility: PACK_48.7z
Use 7-Zip (Windows) or The Unarchiver (macOS). This usually happens if the download was interrupted
Ensure your extraction software is up to date. Older versions of 7-Zip may not recognize newer compression methods. PACK_48.7z