update-manager crashes shortly after it begins to upgrade packages

[Mark Grieveson]

mark@mark-OptiPlex-755:~$ 'lsb_release -rd'
lsb_release -rd: command not found
mark@mark-OptiPlex-755:~$ lsb_release -rd
Description: Ubuntu 14.04.1 LTS
Release: 14.04
mark@mark-OptiPlex-755:~$ apt-cache policy update-manager
update-manager:
  Installed: 1:0.196.12
  Candidate: 1:0.196.12
  Version table:
 *** 1:0.196.12 0
        500 http://ca.archive.ubuntu.com/ubuntu/ trusty-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:0.196.11 0
        500 http://ca.archive.ubuntu.com/ubuntu/ trusty/main amd64 Packages

I expected it to upgrade the packages that it found needed to be upgraded. Instead, it just disappeared off the desktop. No notice of it crashing was given by the system, but that is what I believe happened. I then upgraded the packages via apt-get. Specifically, "apt-get update" and "apt-get dist-upgrade". These commands found the same needed upgrades that update-manager found, but these commands worked and did the upgrade, whereas update-manager did not.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: update-manager 1:0.196.12
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
Date: Thu Aug 14 09:27:06 2014
GsettingsChanges:
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'481'
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'window-width' b'439'
 b'com.ubuntu.update-manager' b'launch-time' b'1408021900'
InstallationDate: Installed on 2014-03-18 (148 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to trusty on 2014-04-24 (111 days ago)