package redmine 1.4.4+dfsg1-2 [modified: usr/share/redmine/Gemfile.lock] failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 2

do upgrade failure

ProblemType: Package
DistroRelease: Ubuntu 13.04
Package: redmine 1.4.4+dfsg1-2 [modified: usr/share/redmine/Gemfile.lock]
Uname: Linux 3.9.3-x86_64-linode33 x86_64
ApportVersion: 2.9.2-0ubuntu8.1
Architecture: amd64
Date: Thu Jun 13 05:43:22 2013
DuplicateSignature: package:redmine:1.4.4+dfsg1-2 [modified: usr/share/redmine/Gemfile.lock]:ErrorMessage: subprocess installed post-installation script returned error exit status 2
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationDate: Installed on 2012-10-22 (233 days ago)
InstallationMedia:

MarkForUpload: True
PackageArchitecture: all
SourcePackage: redmine
Title: package redmine 1.4.4+dfsg1-2 [modified: usr/share/redmine/Gemfile.lock] failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: Upgraded to raring on 2013-06-13 (0 days ago)