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

[otto888]

I was trying to remove a repository.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: software-properties-gtk 0.81.4
ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
Architecture: amd64
Date: Tue Aug 2 21:08:28 2011
ExecutablePath: /usr/bin/software-properties-gtk
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110705.1)
InterpreterPath: /usr/bin/python2.7
PackageArchitecture: all
ProcCmdline: /usr/bin/python /usr/bin/software-properties-gtk -n -t 62914689
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
PythonArgs: ['/usr/bin/software-properties-gtk', '-n', '-t', '62914689']
SourcePackage: software-properties
Title: software-properties-gtk crashed with AttributeError in remove_source(): 'NoneType' object has no attribute 'file'
UpgradeStatus: Upgraded to oneiric on 2011-08-03 (0 days ago)
UserGroups:

[Samuel Dorsaz (akira86)]

I don't have bug trace now, but I simply add this repository at first with this command :
sudo add-apt-repository ppa:team-xbmc/unstable

And crash appear when you use ubuntu software center and source manager application to remove this respository. The other way to remove it is to remove file in /etc/apt/source.list.d/

[Gunnar Wegner (gunnar-wegner)]

I confirm what Samuel says.

I (accidentially) wanted to remove a repository while, in a terminal, i had "sudo apt-get update" running, and the source manager crashed.

[Richard Ayotte (rich-ayotte)]

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/softwareproperties/gtk/SoftwarePropertiesGtk.py", line 839, in on_remove_clicked
    self.backend.RemoveSource(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 269, in RemoveSource
    self.remove_source(source.encode("utf-8"))
  File "/usr/lib/python2.7/dist-packages/softwareproperties/SoftwareProperties.py", line 711, in remove_source
    if source.file != apt_pkg.config.find_file("Dir::Etc::sourcelist"):
AttributeError: 'NoneType' object has no attribute 'file'

[Launchpad Janitor (janitor)]

This bug was fixed in the package software-properties - 0.82.5

---------------
software-properties (0.82.5) precise; urgency=low

  * softwareproperties/gtk/SoftwarePropertiesGtk.py: Drop duplicate definition
    of on_treeview_sources_cursor_changed().
  * softwareproperties/gtk/SoftwarePropertiesGtk.py: Fix crash when closing
    the application with the window title bar button. (LP: #911834)
  * add-apt-repository: Intercept ValueError in addition to URLError, as this
    is the error thrown when trying to decode invalid JSON (which happens on
    404 pages etc.). (LP: #861258)
  * softwareproperties/SoftwareProperties.py, _find_source_from_string():
    Reload the sources list before searching, as it might have changed while
    the D-BUS backend was running. (LP: #854818, #820150)
  * softwareproperties/gtk/SoftwarePropertiesGtk.py: Add missing argument to
    menu popup() call. (LP: #815236)
 -- Martin Pitt <email address hidden> Wed, 07 Mar 2012 10:14:52 +0100

[JG (jdogzz-g5)]

I just got this error on a fully upgraded system so this bug hasn't been fixed yet.

[Sasa Paporovic (melchiaros)]

I am too.