Public bug reported: The exact message was in dutch (see below).
Translated: the upgrader couldn't calculate the upgrade, because of: 1. upgrading to a temporary version of Ubuntu (not the case with 14.04) 2. Use of a temporary Ubuntu version (true: 13.10) 3. Unofficial software packages (true: but should not be critical I guess) for dutch users, the full text of the error: ---- Kon de opwaardering niet berekenen Er is een onoplosbaar probleem geconstateerd bij het berekenen van de upgrade. Dit kan veroorzaakt worden door: * Upgraden naar een voorlopige versie van Ubuntu * Gebruiken van de huidige voorlopige versie van Ubuntu * Onofficiƫle softwarepakketten die niet door Ubuntu geleverd zijn Indien niets van dit alles van toepassing is, meld deze fout dan a.u.b. met behulp van de terminalopdracht 'ubuntu-bug ubuntu-release-upgrader- core'. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: ubuntu-release-upgrader-core 1:0.205.7 ProcVersionSignature: Ubuntu 3.12.0-1.3~lp1195483v1-generic 3.12.0-rc7 Uname: Linux 3.12.0-1-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.2 Architecture: amd64 CheckboxSubmission: 022834f3701ee3930b88879daa45696e CheckboxSystem: b8f3ec504801f13fc208edb5c785b099 CrashDB: ubuntu Date: Tue Nov 4 08:50:55 2014 InstallationDate: Installed on 2010-05-10 (1638 days ago) InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) MarkForUpload: True PackageArchitecture: all SourcePackage: ubuntu-release-upgrader UpgradeStatus: Upgraded to saucy on 2014-11-04 (0 days ago) VarLogDistupgradeTermlog: ** Affects: ubuntu-release-upgrader (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug dist-upgrade saucy third-party-packages -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1389116 Title: Dist. upgrade failed from 13.10 to 14.04 (ASUS notebook) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1389116/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs