Canno upgrade from 14.04 to 14.10

[Piotr]

Hi I cannot upgrade from 14.04 to 14.10, when i do sudo do-release-upgrade it's failed

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: ubuntu-release-upgrader-core 1:0.220.6
ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
Uname: Linux 3.13.0-43-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.6
Architecture: amd64
CrashDB: ubuntu
Date: Sat Jan 10 16:05:15 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-10-07 (95 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
Symptom: release-upgrade
UpgradeStatus: Upgraded to trusty on 2015-01-10 (0 days ago)
mtime.conffile..etc.update.manager.release.upgrades: 2014-10-27T21:36:43.018188