package ptex-bin 2012.20120611-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[kobusvw]

I was upgrading from 12.04 to 12.10 when it occures, then as I after that did another upgrade from 12.10 to 13.04 it happens again.
 it wanted to upgrade only parcially due to this package.

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: ptex-bin 2012.20120611-2
ProcVersionSignature: Ubuntu 3.8.0-34.49-generic 3.8.13.12
Uname: Linux 3.8.0-34-generic i686
ApportVersion: 2.9.2-0ubuntu8.5
AptOrdering:
 unity-webapps-gmail: Install
 ptex-bin: Configure
 unity-webapps-gmail: Configure
Architecture: i386
Date: Sat Dec 21 03:27:42 2013
DuplicateSignature: package:ptex-bin:2012.20120611-2:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2012-10-29 (417 days ago)
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111011)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: texlive-lang
Title: package ptex-bin 2012.20120611-2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to raring on 2013-12-20 (0 days ago)