[Bug 1241142] [NEW] Could not calculate the upgrade

[Roman]

Public bug reported:

When I try upgrade Kubuntu 13.04 to Kubuntu 13.10 , I get next error:

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

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https://bugs.launchpad.net/bugs/1241142

Title:
  Could not calculate the upgrade

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

Bug description:
  When I try upgrade Kubuntu 13.04 to Kubuntu 13.10 , I get next error:

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