[Bug 1364049] [NEW] could not install 'update-manager-core' while upgrading Kubuntu to version 14.04

[Luis]

Public bug reported:

I have got the following message when upgrading from Kubuntu 12.02 to
Kubuntu 14.04:

Could not install 'update-manager-core'
no package named `update-manager-core' is installed, cannot configure

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1364049

Title:
  could not install 'update-manager-core' while upgrading Kubuntu to
  version 14.04

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  I have got the following message when upgrading from Kubuntu 12.02 to
  Kubuntu 14.04:

  Could not install 'update-manager-core'
  no package named `update-manager-core' is installed, cannot configure

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