If your software says "Checksum error in part14," the file was likely corrupted during download. You will need to redownload that specific part.

Do you have the of this archive, or are you getting a specific error message when trying to open it?

Use a modern extraction tool. WinRAR is the standard, but 7-Zip (free and open-source) or The Unarchiver (for Mac) are excellent alternatives.

The string appears to be a specific file name typically associated with large, multi-part compressed archives found on file-sharing networks, forums, or Usenet. If you are trying to manage, extract, or understand what this file is, this guide covers the essentials of handling multi-part RAR archives and the safety precautions you should take. What is a Multi-Part RAR File?