[Bug 1599624] Re: package aptitude 0.6.6-1ubuntu1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

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** Tags removed: need-duplicate-check

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Title:
  package aptitude 0.6.6-1ubuntu1.2 failed to install/upgrade:
  subprocess installed post-installation script returned error exit
  status 2

Status in aptitude package in Ubuntu:
  New

Bug description:
  I am also receiving an error message when I upgrade to a new version
  of Ubuntu

  ProblemType: Package
  DistroRelease: Ubuntu 12.04
  Package: aptitude 0.6.6-1ubuntu1.2
  ProcVersionSignature: Ubuntu 3.2.0-105.146-generic-pae 3.2.79
  Uname: Linux 3.2.0-105-generic-pae i686
  ApportVersion: 2.0.1-0ubuntu17.13
  AptOrdering: aptitude: Configure
  Architecture: i386
  Date: Wed Jul  6 21:39:14 2016
  DpkgTerminalLog:
   Setting up aptitude (0.6.6-1ubuntu1.2) ...
   update-alternatives: error: /var/lib/dpkg/alternatives/aptitude corrupt: invalid status
   dpkg: error processing aptitude (--configure):
    subprocess installed post-installation script returned error exit status 2
  DuplicateSignature: package:aptitude:0.6.6-1ubuntu1.2:subprocess installed post-installation script returned error exit status 2
  ErrorMessage: subprocess installed post-installation script returned error exit status 2
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
  MarkForUpload: True
  SourcePackage: aptitude
  Title: package aptitude 0.6.6-1ubuntu1.2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
  UpgradeStatus: Upgraded to precise on 2016-06-30 (6 days ago)

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