Traceback (most recent call last):
  File "/usr/bin/gnome-codec-install", line 30, in <module>
    main()
  File "/usr/lib/python2.5/site-packages/AppInstall/activation.py", line 441, in main
    app = AppInstall(options, style)
  File "/usr/lib/python2.5/site-packages/AppInstall/AppInstall.py", line 242, in __init__
    self.activation_style.modifyUserInterface(self)
  File "/usr/lib/python2.5/site-packages/AppInstall/activation.py", line 188, in modifyUserInterface
    SearchActivationStyle.modifyUserInterface(self, app)
  File "/usr/lib/python2.5/site-packages/AppInstall/activation.py", line 130, in modifyUserInterface
    app.button_preferences.hide()
AttributeError: AppInstall instance has no attribute 'button_preferences'