I am unable to upgrade from 12.04 to 14.04 using the GUI update manager

[Alex Mcclung]

 It seems like a conflicting package, haven't installed anything out of the ordinary.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.15
ProcVersionSignature: Ubuntu 3.5.0-52.79~precise1-generic 3.5.7.33
Uname: Linux 3.5.0-52-generic i686
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: i386
Date: Mon Jul 14 21:09:15 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1405335651
 com.ubuntu.update-manager window-height 500
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_AU:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-07-14 (0 days ago)
VarLogDistupgradeTermlog: