lolz can't start because preferences code is busted

[Rick Spencer]

WARNING:root:desktopcouch is not available. . falling back to gconf
Traceback (most recent call last):
  File "/usr/bin/lolz", line 315, in <module>
    window = NewLolzWindow()
  File "/usr/bin/lolz", line 217, in NewLolzWindow
    window.finish_initializing(builder)
  File "/usr/bin/lolz", line 83, in finish_initializing
    dlg = PreferencesLolzDialog.NewPreferencesLolzDialog()
  File "/usr/lib/python2.6/dist-packages/lolz/PreferencesLolzDialog.py", line 132, in NewPreferencesLolzDialog
    dialog.finish_initializing(builder)
  File "/usr/lib/python2.6/dist-packages/lolz/PreferencesLolzDialog.py", line 60, in finish_initializing
    do_cats = self.__preferences["cats"]
KeyError: 'cats'

Seems that the default preferences aren't getting set properly. I think I deleted the default preferences.