apport hook fails: "package does not exist"

When reporting bug 823723 against banshee, I observed this traceback in the terminal:

mbp@grace% ubuntu-bug 17978
/usr/lib/python2.7/dist-packages/lazr/restfulclient/__init__.py:19: UserWarning: Module paste was already imported from None, but /usr/lib/python2.7/dist-packages is being added to sys.path
  import pkg_resources
ERROR: hook /usr/share/apport/package-hooks//source_banshee.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 659, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/package-hooks//source_banshee.py", line 37, in add_info
    apport.hookutils.attach_gconf(report, 'banshee-1')
  File "/usr/lib/python2.7/dist-packages/apport/hookutils.py", line 516, in attach_gconf
    '/usr/share/gconf/schemas/*.schemas'):
  File "/usr/lib/python2.7/dist-packages/apport/hookutils.py", line 499, in files_in_package
    files = packaging.get_files(package)
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 149, in get_files
    list = self._call_dpkg(['-L', package])
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 587, in _call_dpkg
    raise ValueError('package does not exist')
ValueError: package does not exist
ubuntu-bug 17978 2.89s user 2.66s system 17% cpu 32.264 total

I don't think there is a banshee-1 package in oneiric.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: banshee 2.1.0-1ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-8.10-generic 3.0.1
Uname: Linux 3.0.0-8-generic x86_64
Architecture: amd64
Date: Wed Aug 10 14:56:48 2011
EcryptfsInUse: Yes
ProcEnviron:
 PATH=(custom, user)
 LANG=en_AU.UTF-8
 SHELL=/bin/zsh
SourcePackage: banshee
UpgradeStatus: Upgraded to oneiric on 2011-08-04 (6 days ago)