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

[Barneedhar]

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)

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #858707, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.