package ubuntu-keyring 2012.05.19 failed to install/upgrade: el subproceso instalado el script post-installation devolvió el código de salida de error 2

Fixed with this post forum: http://ubuntuforums.org/showthread.php?t=2257304&page=2

Problem for exceeding or duplicate keys gpg. Possibly by way of adding PPA repositories.

Thanks,
David Gámiz Jiménez

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: ubuntu-keyring 2012.05.19
ProcVersionSignature: Ubuntu 3.13.0-79.123-generic 3.13.11-ckt33
Uname: Linux 3.13.0-79-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.19
AptOrdering:
 ubuntu-keyring: Install
 ubuntu-keyring: Configure
Architecture: amd64
Date: Sat Mar 5 10:54:29 2016
DuplicateSignature: package:ubuntu-keyring:2012.05.19:el subproceso instalado el script post-installation devolvió el código de salida de error 2
ErrorMessage: el subproceso instalado el script post-installation devolvió el código de salida de error 2
InstallationDate: Installed on 2014-05-26 (649 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.5ubuntu5.5
 apt 1.0.1ubuntu2.11
SourcePackage: ubuntu-keyring
Title: package ubuntu-keyring 2012.05.19 failed to install/upgrade: el subproceso instalado el script post-installation devolvió el código de salida de error 2
UpgradeStatus: No upgrade log present (probably fresh install)