If you are posting these files to a forum or file host, you must upload all parts, or users will not be able to extract them.
Based on typical file archiving conventions, ".rar" files with numbers like "13-14" are part of a (also known as a split archive). This means a large file has been broken into smaller, numbered pieces to make them easier to download or transfer. 13-14.rar
If you are still having trouble, are you seeing an error message like or "unexpected end of archive" ? Let me know, and I can tell you which part is likely broken. If you are posting these files to a