i get a message sayinng there is a problem calculating the distribution upgrade

[Josh Knowlton]

I tried to upgrade to the newest LTS distribution of Ubuntu and got a message that the upgrade could not be calculated.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.2.0-69.103-generic-pae 3.2.62
Uname: Linux 3.2.0-69-generic-pae i686
ApportVersion: 2.0.1-0ubuntu17.7
Architecture: i386
Date: Mon Sep 22 21:46:10 2014
GsettingsChanges:
 com.ubuntu.update-manager first-run false
 com.ubuntu.update-manager launch-time 1411436666
 com.ubuntu.update-manager show-details true
 com.ubuntu.update-manager window-height 529
 com.ubuntu.update-manager window-width 600
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-09-23 (0 days ago)
VarLogDistupgradeTermlog: