Not able to upgrade from 14.04 to 16.04

[Alvaro]

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

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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.
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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:

[Ubuntu Foundations Team Bug Bot (crichton)]

You seem to have installed the cinnamon package on Ubuntu 13.10. Unfortunately, that package is not available yet for 14.04. To upgrade to Ubuntu 14.04 LTS you'll need to either wait for a fix for cinnamon to be available or uninstall the package and then upgrade.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Alvaro (alvnombe)]

No... I have installed Cinnamon on Ubuntu 14.04 directly, and I want to update to 16.04. I have seen that there is a Cinnamon available for Ubuntu 16.04

Thanks and regards

[Alvaro (alvnombe)]

Any update on this? The issue still persists

Thanks and regards