Comment 4 for bug 1388538

Workarounds:

1) Build the Ark without the Debian 'use_libarchive_for_zip_files' patch.

or

2) Download an older package - You could download&install packages from the Trusty: http://packages.ubuntu.com -> http://packages.ubuntu.com/search?ke...ll&section=all

Kubuntu forums: https://www.kubuntuforums.net/showthread.php?66769-Ark-fails-to-produce-zip-archive-instead-making-gzip-with-the-zip-suffix&p=362212&viewfull=1#post362212