[Bug 854818] Re: software-properties-gtk crashed with AttributeError in toggle_source_use(): 'NoneType' object has no attribute 'disabled'

[Mauro]

Same here, 11.10 and Gnome Shell.
Some other infos:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 649, in on_isv_source_toggled
    self.backend.ToggleSourceUse(str(source_entry))
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 143, in __call__
    **keywords)
  File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 630, in call_blocking
    message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/dbus/service.py", line 702, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python2.7/dist-packages/softwareproperties/dbus/SoftwarePropertiesDBus.py", line 156, in ToggleSourceUse
    self.toggle_source_use(source.encode("utf-8"))
  File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 433, in toggle_source_use
    source.disabled = not source.disabled
AttributeError: 'NoneType' object has no attribute 'disabled'

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https://bugs.launchpad.net/bugs/854818

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

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

Bug description:
  Reproduced this, with the following steps:
  1. Add PPA with add-apt-repository (adds both deb and deb-src)
  2. Remove PPA with add-apt-repository --remove (only removes deb entry , deb-src is left there, see bug #838507)
  3. Open Software sources and try to disable or remove the deb-src entry left there

  Expected result:
  The deb-src entry is removed
  What happens:
  Nothing, but the trace attached is written to stdout.

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: software-properties-gtk 0.81.9
  ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4
  Uname: Linux 3.0.0-11-generic x86_64
  NonfreeKernelModules: nvidia
  ApportVersion: 1.23-0ubuntu1
  Architecture: amd64
  CheckboxSubmission: be2fbfde253285762d2d7eaf0e9f7c54
  CheckboxSystem: edda5d4f616ca792bf437989cb597002
  Date: Tue Sep 20 19:59:12 2011
  ExecutablePath: /usr/bin/software-properties-gtk
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk --open-tab 2
  PythonArgs: ['/usr/bin/software-properties-gtk', '--open-tab', '2']
  SourcePackage: software-properties
  Title: software-properties-gtk crashed with AttributeError in toggle_source_use(): 'NoneType' object has no attribute 'disabled'
  UpgradeStatus: Upgraded to oneiric on 2011-09-20 (0 days ago)
  UserGroups: adm admin audio cdrom dialout dip floppy fuse plugdev sudo tape video

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