Upgrade to 14.04.1 issue

[Ingo Hochmuth]

 lsb_release -rd
Description: Ubuntu 12.04.5 LTS
Release: 12.04

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: update-manager 1:0.156.14.17
ProcVersionSignature: Ubuntu 3.2.0-67.101-generic 3.2.60
Uname: Linux 3.2.0-67-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Thu Aug 14 00:10:59 2014
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
Symptom: ubuntu-release-upgrader-core
UpgradeStatus: Upgraded to precise on 2014-08-13 (0 days ago)
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

This is because you've enabled a PPA which provides blender that depends on a version of python3 which is greater than the version of python3 in Trusty. You'll need to use the tool ppa-purge to remove this PPA for the upgrade to proceed.

2014-09-29 15:20:29,725 DEBUG examining: 'deb http://ppa.launchpad.net/irie/blender/ubuntu precise main'