Comment 3 for bug 862973

Exception during installation:
Sep 30 03:52:13 ubuntu plugininstall.py: Traceback (most recent call last):
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 1547, in <module>
Sep 30 03:52:13 ubuntu plugininstall.py: install.run()
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 56, in wrapper
Sep 30 03:52:13 ubuntu plugininstall.py: func(self)
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 180, in run
Sep 30 03:52:13 ubuntu plugininstall.py: self.configure_hardware()
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/share/ubiquity/plugininstall.py", line 720, in configure_hardware
Sep 30 03:52:13 ubuntu plugininstall.py: install_misc.set_debconf(self.target, 'popularity-contest/participate', participate, self.db)
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/lib/ubiquity/ubiquity/install_misc.py", line 79, in set_debconf
Sep 30 03:52:13 ubuntu plugininstall.py: dc = debconf.Debconf(read=dccomm.stdout, write=dccomm.stdin)
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 53, in __init__
Sep 30 03:52:13 ubuntu plugininstall.py: self.setUp(title)
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 56, in setUp
Sep 30 03:52:13 ubuntu plugininstall.py: self.version = self.version(2)
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 65, in <lambda>
Sep 30 03:52:13 ubuntu plugininstall.py: lambda *args, **kw: self.command(command, *args, **kw))
Sep 30 03:52:13 ubuntu plugininstall.py: File "/usr/lib/python2.7/dist-packages/debconf.py", line 86, in command
Sep 30 03:52:13 ubuntu plugininstall.py: status = int(status)
Sep 30 03:52:13 ubuntu plugininstall.py: ValueError: invalid literal for int() with base 10: ''
Sep 30 03:52:13 ubuntu plugininstall.py: