software-properties-gtk crashed with ValueError in run(): <aptsources.sourceslist.SourceEntry object at 0x2830090> is not in list

[Peter Bomars]

lsb_release -rd
Description: Ubuntu oneiric (development branch)
Release: 11.10

apt-cache policy software-properties-gtk
software-properties-gtk:
  Installed: 0.81.9
  Candidate: 0.81.9
  Version table:
 *** 0.81.9 0
        500 http://us.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

EXPECTED: Ability to edit DEB lines to another dist (oneiric -> natty)
OBSERVED: crash, edits don't stick

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-properties-gtk 0.81.9
ProcVersionSignature: Ubuntu 3.0.0-9.15-generic 3.0.3
Uname: Linux 3.0.0-9-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
Date: Thu Sep 1 09:28:02 2011
ExecutablePath: /usr/bin/software-properties-gtk
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110803.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk
PythonArgs: ['/usr/bin/software-properties-gtk']
SourcePackage: software-properties
Title: software-properties-gtk crashed with ValueError in run(): <aptsources.sourceslist.SourceEntry object at 0x2830090> is not in list
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #829286, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.