I thought it might be helpful to anyone still having this problem (where the fix hasn't been backported yet) to mention that the workaround is described in Bug #1607535 (essentially, delete the affected partial download files in /var/lib/update-notifier/package-data- downloads/partial/ and then try reinstalling again).
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1657567 Title: "Content-Range: */<file size>" on non-416 responses considered invalid To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1657567/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs