package libgnomedesktop2.20-cil 2.26.0-8 failed to install/upgrade: subprocess installed post-installation script returned error exit status 29

[RajendraKumar]

it stops installation

ProblemType: Package
DistroRelease: Ubuntu 14.04
Package: libgnomedesktop2.20-cil 2.26.0-8
ProcVersionSignature: Ubuntu 3.13.0-40.69-generic 3.13.11.10
Uname: Linux 3.13.0-40-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
Date: Fri Dec 5 16:56:26 2014
DpkgHistoryLog:
 Start-Date: 2014-12-05 16:56:17
 Install: libssl0.9.8:amd64 (0.9.8o-7ubuntu3.2.14.04.1, automatic)
DuplicateSignature: package:libgnomedesktop2.20-cil:2.26.0-8:subprocess installed post-installation script returned error exit status 29
ErrorMessage: subprocess installed post-installation script returned error exit status 29
InstallationDate: Installed on 2014-07-19 (139 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2)
PackageArchitecture: all
SourcePackage: gnome-desktop-sharp2
Title: package libgnomedesktop2.20-cil 2.26.0-8 failed to install/upgrade: subprocess installed post-installation script returned error exit status 29
UpgradeStatus: No upgrade log present (probably fresh install)