[Bug 1015583] Re: update-manager crashed with ImportError in /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeQuirks.py: No module named plugincore.manager

[Robin Catling]

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https://bugs.launchpad.net/bugs/1015583

Title:
  update-manager crashed with ImportError in /usr/lib/python3/dist-
  packages/DistUpgrade/DistUpgradeQuirks.py: No module named
  plugincore.manager

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

Bug description:
  Update manager in Quantal daily 20/6/12; fresh install in VirtualBox
  4.1.16, no Guest Additions, VESA: Oracle VM VirtualBox VBE Adapter.

  Running software update, recommended Partial Upgrade, then crashed.
  Updater coincidentally failed to  lock apt as Additional Drivers
  kicked in on Notification area (not an unknown fault). Apport bug
  reporter fired up to bring directly into Launchpad.

  No log files in /var/log/dist-upgrade/

  ProblemType: Crash
  DistroRelease: Ubuntu 12.10
  Package: update-manager 1:0.163
  ProcVersionSignature: Ubuntu 3.4.0-5.11-generic 3.4.0
  Uname: Linux 3.4.0-5-generic i686
  ApportVersion: 2.2.3-0ubuntu4
  Architecture: i386
  CurrentDmesg.txt:
   [   32.896109] eth0: no IPv6 routers present
   [   43.847150] init: plymouth-stop pre-start process (1101) terminated with status 1
  Date: Wed Jun 20 14:56:09 2012
  DuplicateOf: https://bugs.launchpad.net/bugs/1013490
  ExecutablePath: /usr/bin/update-manager
  GsettingsChanges:
   
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120619)
  InterpreterPath: /usr/bin/python3.2mu
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python3.2 /usr/bin/update-manager --dist-upgrade
  ProcCwd: /
  ProcEnviron:
   PATH=(custom, no user)
   LANGUAGE=en_GB:en
   LANG=en_GB.UTF-8
   SHELL=/bin/bash
   TERM=unknown
  PythonArgs: ['/usr/bin/update-manager', '--dist-upgrade']
  SourcePackage: update-manager
  Title: update-manager crashed with ImportError in /usr/lib/python3/dist-packages/DistUpgrade/DistUpgradeQuirks.py: No module named plugincore.manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

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