Failure during the upgrade to 14.04

[David Westphal]

During the upgrade from 13.10 to 14.04 there comes a crashreport about a unsolveable problem.

"Ein unlösbares Problem trat beim Berechnen der Aktualisierung auf.

 Dies kann verursacht worden sein duch:
 * Aktualisieren auf eine Vorabversion von Ubuntu
 * Verwendung der aktuellen Vorabversion von Ubuntu
 * Inoffizielle Softwarepakete, die nicht von Ubuntu bereitgestellt wurden"

My translation of that:

"A unsolvable problem occured during the computing of the upgrades.

This can be caused by:
*Upgrading a prelimenary version of Ubuntu
*Using the current prelimenary version of Ubuntu
*innoficial softwarepackages which aren't supported by Ubuntu"

None of these fit.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.5
ProcVersionSignature: Ubuntu 3.11.0-19.33-generic 3.11.10.5
Uname: Linux 3.11.0-19-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CrashDB: ubuntu
Date: Fri Apr 18 10:26:49 2014
InstallationDate: Installed on 2013-01-23 (449 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=de_DE
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-04-18 (0 days ago)
VarLogDistupgradeTermlog: