[Bug 1357645] Re: Could not calculate the 12.04-14.04 upgrade

[Michael E Granat]

It appears that the kubuntu 12.04 LTS KDE Plasma GUI Muon Update Manager
(now obsolete and replaced with PPASC - the PPA Software Centre, which
currently fails to launch on my kubuntu 14.04 system) might have been
interfering with the install that it was trying to effect. Once removed
and the 14.04 install was launched from the terminal shell, the install
worked by way of that method.

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https://bugs.launchpad.net/bugs/1357645

Title:
  Could not calculate the 12.04-14.04 upgrade

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

Bug description:
  Updating from 12.04 LTS to 14.04 LTS. Worked fine on an old HP desktop
  PC this morning, also running the KDE / Kubuntu 12.04 OS and Plasma
  GUI, but does not like updating my Toshiba Sattelite 100 laptop. Don't
  know why this should make a difference. Will restart the laptop and
  try again.

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