Traceback when reporting a Banshee bug

$ ubuntu-bug banshee
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 758, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/package-hooks//source_banshee.py", line 38, in add_info
    report['GConfNonDefault'] = mask_values(report['GConfNonDefault'])
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'GConfNonDefault'

I was able to file a bug nonetheless.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: apport 1.91-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CrashReports:
 600:1000:1000:3935447:2012-02-09 10:06:19.643300000 +0000:2012-02-09 10:06:20.643300000 +0000:/var/crash/_usr_lib_unity_unity-panel-service.1000.crash
 640:1000:1000:1467377:2012-02-09 09:54:27.955309000 +0000:2012-02-09 09:55:33.307308876 +0000:/var/crash/_usr_lib_chromium-browser_chromium-browser.1000.crash
 640:1000:1000:12756907:2012-02-08 22:03:33.248576000 +0000:2012-02-08 22:03:36.276576362 +0000:/var/crash/_usr_bin_spotify.1000.crash
 640:0:0:4020301:2012-02-02 09:23:18.746310000 +0000:2012-02-02 09:23:26.606310716 +0000:/var/crash/_usr_bin_cobblerd.0.crash
 640:1000:1000:5464490:2012-02-03 09:27:32.522217000 +0000:2012-02-03 09:27:39.386217790 +0000:/var/crash/_usr_bin_compiz.1000.crash
Date: Thu Feb 9 11:31:24 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=bash
SourcePackage: apport
UpgradeStatus: Upgraded to precise on 2012-01-16 (23 days ago)