Error Initializing Ubuntu Tweak (importing gconf)

./ubuntu-tweak
dpkg-query: não foram encontrados pacotes coincidindo com ubuntu-tweak
[Launcher][DEBUG] Distribution: Ubuntu 13.04 raring
Application: Ubuntu Tweak
Desktop:ubuntu (ubuntu-tweak:84)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function _confirm_deps at 0x97cf8b4> (debug.py:184)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function _on_error at 0x97cfa04> (debug.py:184)
[DbusProxy][ERROR] org.freedesktop.DBus.Error.ServiceUnknown: The name com.ubuntu_tweak.daemon was not provided by any .service files (dbusproxy.py:43)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function on_find_object at 0x97ec33c> (debug.py:184)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function on_scan_finished at 0x97ec3ac> (debug.py:184)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function on_scan_error at 0x97ec41c> (debug.py:184)
[gtk][DEBUG] <function post_ui at 0x944a844>: (debug.py:182)
[gtk][DEBUG] args-1: <function on_plugin_object_cleaned at 0x97ec56c> (debug.py:184)
ERROR:root:Could not find any typelib for GConf
Traceback (most recent call last):
  File "./ubuntu-tweak", line 92, in on_startup
    from ubuntutweak.main import UbuntuTweakWindow
  File "/home/juliano/Downloads/ubuntu-tweak-master/ubuntutweak/main.py", line 36, in <module>
    from ubuntutweak.preferences import PreferencesDialog
  File "/home/juliano/Downloads/ubuntu-tweak-master/ubuntutweak/preferences.py", line 32, in <module>
    from ubuntutweak.factory import WidgetFactory
  File "/home/juliano/Downloads/ubuntu-tweak-master/ubuntutweak/factory.py", line 24, in <module>
    from ubuntutweak.gui.widgets import *
  File "/home/juliano/Downloads/ubuntu-tweak-master/ubuntutweak/gui/widgets.py", line 9, in <module>
    from ubuntutweak.settings.gconfsettings import GconfSetting, UserGconfSetting
  File "/home/juliano/Downloads/ubuntu-tweak-master/ubuntutweak/settings/gconfsettings.py", line 4, in <module>
    from gi.repository import GConf
ImportError: cannot import name GConf
[Launcher][DEBUG] on_command_line: ['./ubuntu-tweak'] (ubuntu-tweak:104)
DEBUG:Launcher:on_command_line: ['./ubuntu-tweak']
TypeError: can't convert return value to desired type
/usr/lib/python2.7/dist-packages/gi/types.py:113: Warning: g_value_copy: assertion `G_IS_VALUE (src_value)' failed
  return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-packages/gi/types.py:113: Warning: g_value_reset: assertion `G_IS_VALUE (value)' failed
  return info.invoke(*args, **kwargs)
/usr/lib/python2.7/dist-packages/gi/types.py:113: Warning: g_value_unset: assertion `G_IS_VALUE (value)' failed
  return info.invoke(*args, **kwargs)

Any help will be appreciated.
Thank you!