[Bug 789735] Re: Update Manager Package Stopped Opening

[Jean-Baptiste Lallement]

*** This bug is a duplicate of bug 346386 ***
    https://bugs.launchpad.net/bugs/346386

** This bug has been marked a duplicate of bug 346386
   [MASTER] Update fails with invalid package files with "Encountered a section with no Package: header"

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https://bugs.launchpad.net/bugs/789735

Title:
  Update Manager Package Stopped Opening

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

Bug description:
  I am a 56 year old newbie.  I would appreciate someone talking me through what needs to be done step by step.
  Here's the info:

  Could not initialize the package information

  An unresolvable problem occurred while initializing the package
  information.

  Please report this bug against the 'update-manager' package and
  include the following error message:

  'E:Encountered a section with no Package: header, E:Problem with
  MergeList /var/lib/apt/lists/us.archive.ubuntu
  .com_ubuntu_dists_natty_main_binary-i386_Packages, E:The package lists
  or status file could not be parsed or opened.'