Reinstallation crashed

[Stephen Hill]

I was doing a reinstallation of mythbuntu 12.04, with downloads selected and 3rd party downloads selected. It had gotten about 2/3rds (judging by the thermometer guage below, when it said that the installation had crashed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.29
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
CasperVersion: 1.315
Date: Sun Mar 23 16:23:37 2014
InstallCmdLine: file=/cdrom/preseed/mythbuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
LiveMediaBuild: Mythbuntu 12.04.1 "Precise Pangolin" - Release i386 (20120818.1)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Mar 23 23:23:21 mythbuntu plugininstall.py: Traceback (most recent call last):
Mar 23 23:23:21 mythbuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1730, in <module>
Mar 23 23:23:21 mythbuntu plugininstall.py: install.run()
Mar 23 23:23:21 mythbuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 55, in wrapper
Mar 23 23:23:21 mythbuntu plugininstall.py: func(self)
Mar 23 23:23:21 mythbuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 200, in run
Mar 23 23:23:21 mythbuntu plugininstall.py: self.install_extras()
Mar 23 23:23:21 mythbuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1257, in install_extras
Mar 23 23:23:21 mythbuntu plugininstall.py: self.do_install(install_misc.query_recorded_installed())
Mar 23 23:23:21 mythbuntu plugininstall.py: File "/usr/lib/ubiquity/ubiquity/install_misc.py", line 856, in do_install
Mar 23 23:23:21 mythbuntu plugininstall.py: with Cache() as cache:
Mar 23 23:23:21 mythbuntu plugininstall.py: AttributeError: __exit__
Mar 23 23:23:21 mythbuntu plugininstall.py: