Public bug report changed: https://launchpad.net/malone/bugs/28794 Comment: Could you get that .deb: http://people.ubuntu.com/~seb128/debug-pkgs /file-roller_2.13.4-0ubuntu1_i386.deb, install it with "sudo dpkg -i file-roller_2.13.4-0ubuntu1_i386.deb" by example and get a new backtrace then?