Tweak tab hangs with 0.7.3.0 testing

On quantal, fully updated.

It shows this on terminal:

Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/gui/gtk.py", line 25, in func_wrapper
    func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/main.py", line 488, in _load_module
    feature, module = ModuleLoader.search_module_for_name(name)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/modules/__init__.py", line 116, in search_module_for_name
    module = cls._get_module_by_name_from_folder(name, m.__path__[0])
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/modules/__init__.py", line 134, in _get_module_by_name_from_folder
    package = __import__(module_name)
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/tweaks/window.py", line 31, in <module>
    class Window(TweakModule):
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/tweaks/window.py", line 46, in Window
    config = GconfSetting(key='/apps/metacity/general/button_layout')
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/settings/gconfsettings.py", line 21, in __init__
    self.load_override()
  File "/usr/lib/python2.7/dist-packages/ubuntutweak/settings/gconfsettings.py", line 37, in load_override
    for line in open(override):
IOError: [Errno 2] No such file or directory: '/usr/share/gconf/defaults/20_une-gconf-default'