[Bug 912152] Re: <type 'exceptions.SystemError'>: E:The package index files are corrupted. No Filename: field for package launchpad-getkeys.

[Sebastian Heinlein]

*** This bug is a duplicate of bug 659438 ***
    https://bugs.launchpad.net/bugs/659438

** This bug is no longer a duplicate of bug 858707
   <type 'exceptions.SystemError'>: E:I wasn't able to locate a file for the upnp-router-control package. This might mean you need to manually fix this package.
** This bug has been marked a duplicate of bug 659438
   Installation/Removal fails because of package which could not be located (failure in apt.Cache.required_download)

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Title:
  <type 'exceptions.SystemError'>: E:The package index files are
  corrupted. No Filename: field for package launchpad-getkeys.

Status in “aptdaemon” package in Ubuntu:
  New

Bug description:
  The update manager fails to update my software and a window pops up
  with the following content:

  An unhandlable error occured

  There seems to be a programming error in aptdaemon, the software that
  allows you to install/remove software and to perform other package
  management related tasks.

  Traceback (most recent call last):
    File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate
      trans.unauthenticated = self._simulate_helper(trans)
    File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper
      return depends, self._cache.required_download, \
    File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download
      pm.get_archives(fetcher, self._list, self._records)
  SystemError: E:The package index files are corrupted. No Filename: field for package launchpad-getkeys.

  I think this bug might be related to #898851

  ProblemType: Crash
  DistroRelease: Ubuntu 11.10
  Package: aptdaemon 0.43+bzr697-0ubuntu1.1
  ProcVersionSignature: Ubuntu 3.0.0-15.24-generic 3.0.13
  Uname: Linux 3.0.0-15-generic x86_64
  NonfreeKernelModules: wl
  Annotation: Upgrading the system failed
  ApportVersion: 1.23-0ubuntu4
  Architecture: amd64
  Date: Thu Jan  5 15:55:28 2012
  DesktopFile: /usr/share/aptdaemon/aptdaemon.desktop
  ExecutablePath: /usr/sbin/aptd
  InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
  PackageArchitecture: all
  SourcePackage: aptdaemon
  Title: <type 'exceptions.SystemError'>: E:The package index files are corrupted. No Filename: field for package launchpad-getkeys.
  TransactionDepends: [[], [], [], [], [], [], []]
  TransactionErrorCode: error-unknown
  TransactionKwargs: {'safe_mode': dbus.Boolean(True)}
  TransactionLocale:
   
  TransactionOutput:
   
  TransactionPackages: [[], [], [], [], [], []]
  TransactionRole: role-upgrade-system
  UpgradeStatus: Upgraded to oneiric on 2011-09-30 (96 days ago)

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