I was directed here when reporting, but in my case, it was with Skype, not Rhythmbox:
Traceback (most recent call last): File "/usr/lib/python3/dist-packages/apport/packaging_impl.py", line 113, in _apt_pkg return self._cache()[package] File "/usr/lib/python3/dist-packages/apt/cache.py", line 185, in __getitem__ raise KeyError('The cache has no package named %r' % key) KeyError: "The cache has no package named 'skype-bin'" -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to rhythmbox in Ubuntu. https://bugs.launchpad.net/bugs/1055464 Title: apport-gtk crashed with ValueError in _apt_pkg(): package rhythmbox- ubuntuone-music-store does not exist Status in “apport” package in Ubuntu: Confirmed Status in “rhythmbox” package in Ubuntu: Triaged Bug description: Apport crashed reporting a bug :) ProblemType: Crash DistroRelease: Ubuntu 12.10 Package: apport-gtk 2.5.2-0ubuntu4 ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4 Uname: Linux 3.5.0-15-generic i686 ApportVersion: 2.5.2-0ubuntu4 Architecture: i386 Date: Mon Sep 24 13:00:46 2012 ExecutablePath: /usr/share/apport/apport-gtk InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100201) InterpreterPath: /usr/bin/python3.2mu PackageArchitecture: all ProcCmdline: /usr/bin/python3 /usr/share/apport/apport-gtk ProcEnviron: PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/zsh PythonArgs: ['/usr/share/apport/apport-gtk'] SourcePackage: apport Title: apport-gtk crashed with ValueError in _apt_pkg(): package rhythmbox-ubuntuone-music-store does not exist UpgradeStatus: Upgraded to quantal on 2012-01-03 (264 days ago) UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare wireshark To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1055464/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp