[Bug 815741] Re: software-properties-gtk crashed with AttributeError in remove_source(): 'NoneType' object has no attribute 'file'

[Apport retracing service]

*** This bug is a duplicate of bug 820150 ***
    https://bugs.launchpad.net/bugs/820150

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 #820150, 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.

** Tags removed: need-duplicate-check

** Attachment removed: "Dependencies.txt"
   https://bugs.launchpad.net/bugs/815741/+attachment/2230682/+files/Dependencies.txt

** Attachment removed: "ProcMaps.txt"
   https://bugs.launchpad.net/bugs/815741/+attachment/2230683/+files/ProcMaps.txt

** Attachment removed: "ProcStatus.txt"
   https://bugs.launchpad.net/bugs/815741/+attachment/2230684/+files/ProcStatus.txt

** This bug has been marked a duplicate of private bug 820150

** Visibility changed to: Public

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https://bugs.launchpad.net/bugs/815741

Title:
  software-properties-gtk crashed with AttributeError in
  remove_source(): 'NoneType' object has no attribute 'file'

Status in “software-properties” package in Ubuntu:
  New

Bug description:
  help?

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: software-properties-gtk 0.81.2
  ProcVersionSignature: Ubuntu 3.0.0-6.7-generic 3.0.0-rc7
  Uname: Linux 3.0.0-6-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Mon Jul 25 10:45:31 2011
  ExecutablePath: /usr/bin/software-properties-gtk
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110724)
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk -n -t 65011717
  ProcEnviron:
   PATH=(custom, no user)
   LANG=ro_RO.UTF-8
   SHELL=/bin/bash
  PythonArgs: ['/usr/bin/software-properties-gtk', '-n', '-t', '65011717']
  SourcePackage: software-properties
  Title: software-properties-gtk crashed with AttributeError in remove_source(): 'NoneType' object has no attribute 'file'
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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