package texlive-generic-extra 2014.20141024-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[raist]

I'm installing lyx and i received an error about the package texlive-generic-extra...i tried with synaptic and appear installed...if i reinstall the same error occurs....however lyx is working...i don't check all features but the software is open now

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: texlive-generic-extra 2014.20141024-1
ProcVersionSignature: Ubuntu 3.19.0-23.24-generic 3.19.8-ckt2
Uname: Linux 3.19.0-23-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.7
Architecture: amd64
Date: Tue Nov 3 15:21:40 2015
DuplicateSignature: package:texlive-generic-extra:2014.20141024-1:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2015-03-31 (216 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
PackageArchitecture: all
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1
 apt 1.0.9.7ubuntu4.2
SourcePackage: texlive-extra
Title: package texlive-generic-extra 2014.20141024-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)