Had the same problem on 11.10 as well. It has appeared once I've upgraded packages using Calibre PPA as Mark mentioned - but the source of the problem was python-dbus package (Kupfer shouldn't be affected by python-qt4 since it uses GTK). Once I've downgraded python-dbus from v1.0.0 to Oneiric's v0.84, Kupfer started to work. Therefore I think you should take a look at python-dbus compatibility.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/921829 Title: [precise] kupfer does not launch To manage notifications about this bug go to: https://bugs.launchpad.net/kupfer/+bug/921829/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
