ubuntu tweak report an error on start

[marco agnelli]

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/ubuntutweak/mainwindow.py", line 389, in setup_notebook
    module = MLOADER.get_module(id)
  File "/usr/lib/pymodules/python2.6/ubuntutweak/modules/__init__.py", line 61, in get_module
    return self.id_table[id]
KeyError: 6

[Sr Roo (samanosr)]

Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/ubuntutweak/mainwindow.py", line 390, in setup_notebook
    page = module()
  File "/usr/lib/pymodules/python2.6/ubuntutweak/modules/lockdown.py", line 67, in __init__
    if proxy.is_exists(ROOT_THEMES) and proxy.is_exists(ROOT_ICONS):
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/usr/lib/pymodules/python2.6/dbus/connection.py", line 620, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Error.AccessDenied: No permissions to perform the task.