Comment 2 for bug 1047436

In UbiquitySyslog.txt:

Sep 7 14:28:36 ubuntu ubiquity: umount: /target/cdrom: not mounted
Sep 7 14:28:36 ubuntu ubiquity:
Sep 7 14:28:36 ubuntu plugininstall.py: log-output -t ubiquity umount /target/cdrom
Sep 7 14:28:36 ubuntu finish-install: Disabling CD in sources.list
Sep 7 14:28:36 ubuntu plugininstall.py: Exception during installation:
Sep 7 14:28:36 ubuntu plugininstall.py: Traceback (most recent call last):
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1728, in <module>
Sep 7 14:28:36 ubuntu plugininstall.py: install.run()
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 55, in wrapper
Sep 7 14:28:36 ubuntu plugininstall.py: func(self)
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 215, in run
Sep 7 14:28:36 ubuntu plugininstall.py: self.remove_extras()
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1462, in remove_extras
Sep 7 14:28:36 ubuntu plugininstall.py: if self.db.get('apt-setup/restricted') == 'false':
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 60, in <lambda>
Sep 7 14:28:36 ubuntu plugininstall.py: lambda *args, **kw: self.command(command, *args, **kw))
Sep 7 14:28:36 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 81, in command
Sep 7 14:28:36 ubuntu plugininstall.py: status = int(status)
Sep 7 14:28:36 ubuntu plugininstall.py: ValueError: invalid literal for int() with base 10: ''
Sep 7 14:28:36 ubuntu plugininstall.py:
Sep 7 14:28:48 ubuntu ubiquity:
Sep 7 14:28:48 ubuntu ubiquity: (process:28838): Gtk-WARNING **: Locale not supported by C library.
Sep 7 14:28:48 ubuntu ubiquity: #011Using the fallback 'C' locale.
Sep 7 14:28:48 ubuntu ubiquity:
Sep 7 14:28:48 ubuntu ubiquity: ** (apport-gtk:28838): WARNING **: The connection is closed