can't upgrade release from 14.04 to 14.10 because can not calculate changes

[diarmuid]

xubuntu installed on top of ubuntu

several ppa installed but already deactivated/deleted

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.7
ProcVersionSignature: Ubuntu 3.13.0-57.95-generic 3.13.11-ckt21
Uname: Linux 3.13.0-57-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
CrashDB: ubuntu
Date: Thu Jul 16 00:08:39 2015
InstallationDate: Installed on 2015-01-16 (180 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=es_CO:es
 TERM=xterm
 PATH=(custom, no user)
 LANG=es_CO.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to trusty on 2015-07-16 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2015-06-06T17:30:23.272057

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. The release upgrade process will now try to upgrade from 14.04 (Trusty) to 15.04 (Vivid) as 14.10 (Utopic) is End of Life. Could you please try the upgrade process again and if it fails open a new bug report following the same process you used to open this one? Thanks in advance!