If it was .tar.gz, something went wrong in the process, because it contains no files. Did you add the logfile to the .tar.gz?
You can simply launch the "zip" icon, then select "new" from the menu, give it a name, then add the logfile from "file system" "mnt" "sda2" "xfprot.log" but don't forget to "add to list" then "ok" and it will make a .tar.gz file with your logfile. Then rename and post.
I can't see that there's anything inside the file you posted. Please try again; I'm dying to see what it found!