installer crashed while preparing disk

[acemo]

Binary package hint: ubiquity

Traceback (most recent call last):
  File "/usr/lib/ubiquity/bin/ubiquity", line 201, in <module>
    main()
  File "/usr/lib/ubiquity/bin/ubiquity", line 196, in main
    install(args[0])
  File "/usr/lib/ubiquity/bin/ubiquity", line 56, in install
    ret = wizard.run()
  File "/usr/lib/ubiquity/ubiquity/frontend/kde-ui.py", line 341, in run
    self.process_step()
  File "/usr/lib/ubiquity/ubiquity/frontend/kde-ui.py", line 832, in process_step
    self.process_autopartitioning()
  File "/usr/lib/ubiquity/ubiquity/frontend/kde-ui.py", line 890, in process_autopartitioning
    choice = self.get_autopartition_choice()[0]
  File "/usr/lib/ubiquity/ubiquity/frontend/kde-ui.py", line 1621, in get_autopartition_choice
    choice = unicode(self.autopartition_buttongroup_texts[id])
KeyError: -1

[Colin Watson (cjwatson)]

Thanks for your report. This looks very much like a knock-on effect of bug 89004; upgrade ubiquity to the current version in feisty before starting the installation to work around it.