Tested here on Zesty and it works for me. Could you check that you've got the latest version of gconf2 installed as well?
gconf2: Installed: 3.2.6-3ubuntu7 Candidate: 3.2.6-3ubuntu7 Version table: *** 3.2.6-3ubuntu7 500 500 http://archive.ubuntu.com/ubuntu zesty/universe amd64 Packages 100 /var/lib/dpkg/status -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1672424 Title: Cannot install Debian files outside of the repositories To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-release-notes/+bug/1672424/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs