[Bug 1355837] Re: Upgrading from 12.04 LTS Kubuntu to 14.4 LTS

[Brian Murray]

*** This bug is a duplicate of bug 1308338 ***
    https://bugs.launchpad.net/bugs/1308338

** This bug has been marked a duplicate of bug 1308338
   Ubuntu 12.04 LTS -> 14.04 LTS upgrade fails if Flight Gear installed

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https://bugs.launchpad.net/bugs/1355837

Title:
  Upgrading from 12.04 LTS Kubuntu to 14.4 LTS

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

Bug description:
  First time using the upgrade tools to move to next LTS release of
  Kubuntu.  Encountered error message "Could not calculate the upgrade".
  Once this message occurs, upgrade process ends.  Not completely sure
  this is a bug, but message treed is pretty non-specific.  I have only
  stayed with LTS distribution.  Have never actually tried pre-release
  or short term release versions.

  I have verified I do not have any non-supported software in place
  currently on system that is running 12.04 LTS release.  I have
  reviewed the current configuration of software sources in MUOn manager
  to make sure there isn't something unusual there.  I cocnsistently run
  into the error above during the cycle of Setting new software
  channels.

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