no controller 'Config' defined when Preferences button clicked

[cybertoast]

OS: Ubuntu 9.04
vimmate version: 0.8.1

Steps:

• Open vimmate from terminal: vimmate foo.txt
• Click Preferences button
• Get lots of screen-dump and final line that says:
  no controller 'Config' defined

[tylergannon]

Same. Ubuntu Lucid