Traceback (most recent call last):
  File "/usr/lib/ubiquity/ubiquity/plugin.py", line 48, in wrapper
    return target(self, *args, **kwargs)
  File "/usr/lib/ubiquity/plugins/ubi-partman.py", line 1200, in on_partition_list_treeview_row_activated
    self.partman_dialog(devpart, partition, create=False)
  File "/usr/lib/ubiquity/ubiquity/plugin.py", line 48, in wrapper
    return target(self, *args, **kwargs)
  File "/usr/lib/ubiquity/plugins/ubi-partman.py", line 951, in partman_dialog
    for script, arg, option in partition['method_choices']:
KeyError: 'method_choices'