INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.desktop.background>
INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.shell.clock>
INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.shell.calendar>
INFO    : Caching gconf: <gtweak.gconf.GConfSetting: /desktop/gnome/shell/windows/button_layout> (--short-docs)
INFO    : Caching gconf: <gtweak.gconf.GConfSetting: /desktop/gnome/shell/windows/button_layout> (--long-docs)
INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.settings-daemon.plugins.power>
INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.desktop.interface>
INFO    : Caching gconf: <gtweak.gconf.GConfSetting: /apps/metacity/general/titlebar_font> (--short-docs)
INFO    : Caching gconf: <gtweak.gconf.GConfSetting: /apps/metacity/general/titlebar_font> (--long-docs)
INFO    : Caching gconf: <gtweak.gconf.GConfSetting: /apps/metacity/general/titlebar_font> (--short-docs)
INFO    : Caching gsettings: <gtweak.gsettings._GSettingsSchema: org.gnome.settings-daemon.plugins.xsettings>
Traceback (most recent call last):
  File "/usr/bin/gnome-tweak-tool", line 84, in <module>
    MainWindow()
  File "/usr/bin/gnome-tweak-tool", line 47, in __init__
    model)
  File "/usr/lib64/python2.7/site-packages/gtweak/tweakview.py", line 38, in __init__
    self._model.load_tweaks()
  File "/usr/lib64/python2.7/site-packages/gtweak/tweakmodel.py", line 97, in load_tweaks
    mods = __import__("gtweak.tweaks", globals(), locals(), tweak_files, 0)
  File "/usr/lib64/python2.7/site-packages/gtweak/tweaks/tweak_interface.py", line 85, in <module>
    CursorThemeSwitcher(size_group=sg)),
  File "/usr/lib64/python2.7/site-packages/gtweak/tweaks/tweak_interface.py", line 66, in __init__
    **options)
  File "/usr/lib64/python2.7/site-packages/gtweak/widgets.py", line 140, in __init__
    assert len(key_options) > 0
AssertionError