package python-bzrlib 2.6.0-3ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 101

installing gparted with software center

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: python-bzrlib 2.6.0-3ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
Date: Sat Oct 19 14:55:38 2013
DuplicateSignature: package:python-bzrlib:2.6.0-3ubuntu1:subprocess installed post-installation script returned error exit status 101
ErrorMessage: subprocess installed post-installation script returned error exit status 101
InstallationDate: Installed on 2013-10-18 (3 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: bzr
Title: package python-bzrlib 2.6.0-3ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 101
UpgradeStatus: No upgrade log present (probably fresh install)