I was doing a full backup of my site in cPanel. I downloaded the backup file (a .tar.gz file). The archive manager reported the following message when I opened the backup: "gzip: stdin: unexpected end of file tar: Unexpected EOF in archive tar: Error is not recoverable: exiting now" This is my first backup attempt. What does this mean and how do I fix this? One of my friends has also had this problem. Now I don't have a backup and am trying to recover my data from WordPress.