Unable to upgrade from Saucy to Trusty

[Rainshoots]

I just upgraded from Precise (12.04) to Trusty (13.10) and I am presently trying to upgrade to Trusty (14.04).

However, I am encounter some problems during the upgrade via upgrade-manager. In the middle of calculating changes, upgrade-manger just stopped with the following message:

E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.

I don't want to do a clean install as this would mean rebuilding all my program packages from scratch.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ubuntu-release-upgrader-core 1:0.205.6
ProcVersionSignature: Ubuntu 3.11.0-20.35-generic 3.11.10.6
Uname: Linux 3.11.0-20-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CrashDB: ubuntu
Date: Sun May 18 23:18:44 2014
InstallationDate: Installed on 2014-04-08 (40 days ago)
InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release amd64 (20140204)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to saucy on 2014-05-18 (0 days ago)
VarLogDistupgradeTermlog: