Hello!
Sounds like you're tried to extract the latest xarchiver from a tarball. That's ALMOST never necessary. More often than not, it's bad karma to second-guess the repositories.
All this shouldn't be a major disaster; Xarchiver is just a GUI front end for tar.
Try this. Open a terminal window [CTRL-ALT-T] and type the following:
sudo apt-get purge xarchiver
sudo apt-get install xarchiver
If it bombs on a dependency, try this:
sudo apt-get install -f
THAT *SHOULD* fix the broken dependency or dependencies.
If not, sounds like things are REALLY bad. Maybe you deleted tar, in which case you can just type this in a terminal window:
sudo apt-get install tar
If all else fails, you can use Archive Manager/File Roller to extract tarballs, right click on it in Thunar, or use tar in a terminal. To extract the tarball 'fubar', type 'tar -xvzf fubar.tar.gz' in a termimal window.
Worst case scenario: Reinstall Linux Lite, and you may borrow my favorite phrase:
"Knows JUST ENOUGH Linux to be DANGEROUS."
As for myself, I'm (in)famous for goofing things up so badly sometimes, I have to 'nuke it and start over'. Mistakes are how we learn things...
73 DE N4RPS
Rob