Traceback (most recent call last):
  File "/usr/lib/ubiquity/bin/ubiquity", line 524, in <module>
    main(oem_config)
  File "/usr/lib/ubiquity/bin/ubiquity", line 511, in main
    install(query=options.query)
  File "/usr/lib/ubiquity/bin/ubiquity", line 238, in install
    wizard = ui.Wizard(distro)
  File "/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py", line 198, in __init__
    BaseFrontend.__init__(self, distro)
  File "/usr/lib/ubiquity/ubiquity/frontend/base.py", line 108, in __init__
    self.start_debconf()
  File "/usr/lib/ubiquity/ubiquity/frontend/base.py", line 284, in start_debconf
    self.db = self.debconf_communicator()
  File "/usr/lib/ubiquity/ubiquity/frontend/base.py", line 279, in debconf_communicator
    return DebconfCommunicator('ubiquity', cloexec=True)
  File "/usr/lib/ubiquity/ubiquity/debconfcommunicator.py", line 34, in __init__
    write=self.dccomm.stdin)
  File "/usr/lib/python2.6/dist-packages/debconf.py", line 53, in __init__
    self.setUp(title)
  File "/usr/lib/python2.6/dist-packages/debconf.py", line 56, in setUp
    self.version = self.version(2)
  File "/usr/lib/python2.6/dist-packages/debconf.py", line 65, in <lambda>
    lambda *args, **kw: self.command(command, *args, **kw))
  File "/usr/lib/python2.6/dist-packages/debconf.py", line 86, in command
    status = int(status)
ValueError: invalid literal for int() with base 10: ''