Can not calculate the upgrade

[Matthew Origer]

I have removed all extra software repositories from apt. It will not calculate the upgrade. I cannot find anything else that may be wrong with the system. The error message is not very helpful.

* Upgrading to a pre-release version of Ubuntu
* Running the current pre-release version of Ubuntu
* Unofficial software packages not provided by Ubuntu

I am running Quantal 12.10

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: ubuntu-release-upgrader-core 1:0.190.8
ProcVersionSignature: Ubuntu 3.5.0-51.76-generic 3.5.7.33
Uname: Linux 3.5.0-51-generic x86_64
ApportVersion: 2.6.1-0ubuntu13
Architecture: amd64
Date: Mon Jun 9 22:12:58 2014
InstallationDate: Installed on 2013-03-02 (464 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/usr/bin/fish
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to quantal on 2014-06-10 (0 days ago)