12.04.1 Installation reported a crash - usr/share/ubiquity/plugininstall.py", line 1728, in <module>

[Max Maklin]

Left installation running and when I came back, it had failed.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.10.20
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 Sep 9 09:55:03 2012
InstallCmdLine: file=/cdrom/preseed/edubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --
LiveMediaBuild: Edubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120820.1)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 TERM=linux
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Sasa Paporovic (melchiaros)]

In UbiquitySyslog.txt:

Sep 9 06:33:54 edubuntu os-prober: debug: os detected by /usr/lib/os-probes/50mounted-tests
Sep 9 06:33:55 edubuntu os-prober: debug: /dev/sda5: is active swap
Sep 9 06:33:55 edubuntu plugininstall.py: log-output -t ubiquity umount -f /target/proc
Sep 9 06:33:55 edubuntu plugininstall.py: log-output -t ubiquity umount -f /target/sys
Sep 9 06:33:55 edubuntu plugininstall.py: log-output -t ubiquity umount -f /target/dev
Sep 9 06:33:56 edubuntu plugininstall.py: log-output -t ubiquity umount /target/cdrom
Sep 9 06:33:56 edubuntu finish-install: Disabling CD in sources.list
Sep 9 06:33:56 edubuntu plugininstall.py: Exception during installation:
Sep 9 06:33:56 edubuntu plugininstall.py: Traceback (most recent call last):
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1728, in <module>
Sep 9 06:33:56 edubuntu plugininstall.py: install.run()
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 55, in wrapper
Sep 9 06:33:56 edubuntu plugininstall.py: func(self)
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 215, in run
Sep 9 06:33:56 edubuntu plugininstall.py: self.remove_extras()
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1453, in remove_extras
Sep 9 06:33:56 edubuntu plugininstall.py: cache = Cache()
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 102, in __init__
Sep 9 06:33:56 edubuntu plugininstall.py: self.open(progress)
Sep 9 06:33:56 edubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 145, in open
Sep 9 06:33:56 edubuntu plugininstall.py: self._cache = apt_pkg.Cache(progress)
Sep 9 06:33:56 edubuntu plugininstall.py: SystemError: E:Encountered a section with no Package: header, E:Problem with MergeList /target/var/lib/apt/lists/ca.archive.ubuntu.com_ubuntu_dists_precise-updates_universe_i18n_Translation-en, E:The package lists or status file could not be parsed or opened.
Sep 9 06:33:56 edubuntu plugininstall.py:

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 346386, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.
[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]