package mythexport 2.2.4-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[acki]

Installation of mythexport failed. I can't install the update either automatically nor manually

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: mythexport 2.2.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-57.87-generic 3.2.52
Uname: Linux 3.2.0-57-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Thu Dec 5 08:44:22 2013
DuplicateSignature: package:mythexport:2.2.4-0ubuntu1:subprocess installed post-installation script returned error exit status 2
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
SourcePackage: mythexport
Title: package mythexport 2.2.4-0ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)