update manager Could not initialize the package information

[Larry Carter]

Binary package hint: update-manager

'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_natty_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.'

Description: Ubuntu 11.04
Release: 11.04

Update manager won't run. It stops with this error.

[Robert Roth (evfool)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command, as it will automatically gather debugging information, in a terminal:
apport-collect 780913
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Larry Carter (larry-carter-gmail)]

Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 369, in <module>
    app.run_argv()
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 570, in run_argv
    return self.run_update_report()
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 459, in run_update_report
    apport.packaging.get_version(p)
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 70, in get_version
    pkg = self._apt_pkg(package)
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 63, in _apt_pkg
    return self._cache()[package]
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 51, in _cache
    self._apt_cache = apt.Cache(apt.progress.base.OpProgress())
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 89, in __init__
    self.open(progress)
  File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 127, in open
    self._cache = apt_pkg.Cache(progress)
SystemError: E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_natty_main_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.