[Bug 1577136] [NEW] Not able to upgrade from 14.04 to 16.04

[Alvaro]

Public bug reported:

When I try to upgrade from 14.04 to 16.04, using command "sudo update-
manager -d" I get this error

--------------------------------------
No se ha podido calcular la actualización

Ha ocurrido un problema mientras se calculaba la actualización.

 Eso se ha podido causar por:
 * Actualizar a una versión de Ubuntu aún no publicada
 * Estar ejecutando la versión actual, aún no publicada, de Ubuntu
 * Paquetes no oficiales de software no proporcionados por Ubuntu

Si nada de esto aplica, informe de este error usando la orden «ubuntu-bug ubuntu-release-upgrader-core» en una terminal.
-------------------------------------


Thanks and regards

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.8
ProcVersionSignature: Ubuntu 3.19.0-58.64~14.04.1-generic 3.19.8-ckt16
Uname: Linux 3.19.0-58-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: X-Cinnamon
Date: Sun May  1 12:51:55 2016
InstallationDate: Installed on 2015-12-25 (127 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2016-05-01 (0 days ago)
VarLogDistupgradeTermlog:

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


** Tags: amd64 apport-bug dist-upgrade trusty

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https://bugs.launchpad.net/bugs/1577136

Title:
  Not able to upgrade from 14.04 to 16.04

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

Bug description:
  When I try to upgrade from 14.04 to 16.04, using command "sudo update-
  manager -d" I get this error

  --------------------------------------
  No se ha podido calcular la actualización

  Ha ocurrido un problema mientras se calculaba la actualización.

   Eso se ha podido causar por:
   * Actualizar a una versión de Ubuntu aún no publicada
   * Estar ejecutando la versión actual, aún no publicada, de Ubuntu
   * Paquetes no oficiales de software no proporcionados por Ubuntu

  Si nada de esto aplica, informe de este error usando la orden «ubuntu-bug ubuntu-release-upgrader-core» en una terminal.
  -------------------------------------

  
  Thanks and regards

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: ubuntu-release-upgrader-core 1:0.220.8
  ProcVersionSignature: Ubuntu 3.19.0-58.64~14.04.1-generic 3.19.8-ckt16
  Uname: Linux 3.19.0-58-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CrashDB: ubuntu
  CurrentDesktop: X-Cinnamon
  Date: Sun May  1 12:51:55 2016
  InstallationDate: Installed on 2015-12-25 (127 days ago)
  InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to trusty on 2016-05-01 (0 days ago)
  VarLogDistupgradeTermlog:

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