[Bug 1045517] Re: update-manager crashed with AttributeError in _on_download_changed(): 'NoneType' object has no attribute 'set_value'

[Filiprino]

Just had this error. Happened when I clicked the close button by
accident (the button on the window bar).

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Title:
  update-manager crashed with AttributeError in _on_download_changed():
  'NoneType' object has no attribute 'set_value'

Status in “update-manager” package in Ubuntu:
  Confirmed

Bug description:
  Left update manager running in the background for several hours, came
  back and it was unresponsive.

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: update-manager 1:0.170
  ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
  Uname: Linux 3.5.0-13-generic x86_64
  ApportVersion: 2.5.1-0ubuntu4
  Architecture: amd64
  Date: Mon Sep  3 13:47:19 2012
  EcryptfsInUse: Yes
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   b'com.ubuntu.update-manager' b'first-run' b'false'
   b'com.ubuntu.update-manager' b'launch-time' b'1346684008'
   b'com.ubuntu.update-manager' b'show-details' b'true'
   b'com.ubuntu.update-manager' b'window-height' b'240'
   b'com.ubuntu.update-manager' b'window-width' b'500'
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  InterpreterPath: /usr/bin/python3.2mu
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3 /usr/bin/update-manager --no-update --no-focus-on-map
  PythonArgs: ['/usr/bin/update-manager', '--no-update', '--no-focus-on-map']
  SourcePackage: update-manager
  Title: update-manager crashed with AttributeError in _on_download_changed(): 'NoneType' object has no attribute 'set_value'
  Traceback:
   Traceback (most recent call last):
     File "/usr/lib/python3/dist-packages/aptdaemon/gtk3widgets.py", line 522, in _on_download_changed
       model.set_value(iter, self.COL_TEXT, text)
   AttributeError: 'NoneType' object has no attribute 'set_value'
  UpgradeStatus: Upgraded to quantal on 2012-07-20 (45 days ago)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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