I was unable to upgrade from V13.04 to v13.10

[Jan Morell]

I am running v 13.04:

I tried the apt-cache policy pkgname and the terminal returned: Unable to locate package pkgname

I looked at the verson of the Software Center and it is: 5.6.0

While trying to upgrade from 13.04 to 13.10 I got the message that there was a critical problem.

I returned to the existing state.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.13
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic i686
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CrashDB: ubuntu
Date: Fri Oct 18 09:50:26 2013
InstallationDate: Installed on 2013-06-01 (138 days ago)
InstallationMedia: Xubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130213)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-10-18 (0 days ago)
VarLogDistupgradeTermlog: