TypeError: More items found in D-Bus signature than in Python arguments

[David Robert Lewis]

gnome-activity-journal /usr/lib/pymodules/python2.6/pygments/plugin.py:39: UserWarning: Module pygments was already imported from /usr/lib/pymodules/python2.6/pygments/__init__.py, but /usr/lib/pymodules/python2.6 is being added to sys.path
  import pkg_resources
ERROR:dbus.connection:Unable to set arguments (1279144800, 1279231199) according to signature u'uus': <type 'exceptions.TypeError'>: More items found in D-Bus signature than in Python arguments
Traceback (most recent call last):
  File "/usr/bin/gnome-activity-journal", line 99, in <module>
    from src.main import PortalWindow
  File "/usr/share/gnome-activity-journal/src/main.py", line 30, in <module>
    from activity_widgets import MultiViewContainer, TimelineViewContainer, ThumbViewContainer, PinnedPane
  File "/usr/share/gnome-activity-journal/src/activity_widgets.py", line 34, in <module>
    from store import ContentStruct, CLIENT
  File "/usr/share/gnome-activity-journal/src/store.py", line 471, in <module>
    STORE = Store()
  File "/usr/share/gnome-activity-journal/src/store.py", line 351, in __init__
    day = Day(date)
  File "/usr/share/gnome-activity-journal/src/store.py", line 186, in __init__
    facts = external.HAMSTER.get_facts(self.start, self.end)
  File "/usr/share/gnome-activity-journal/src/external.py", line 259, in get_facts
    return map(self.Fact, self.iface.GetFacts(start, end))
  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 610, in call_blocking
    message.append(signature=signature, *args)
TypeError: More items found in D-Bus signature than in Python arguments

Python 2.6.5
Linux afrodeity-desktop 2.6.32-23-generic #37-Ubuntu SMP Fri Jun 11 07:54:58 UTC 2010 i686 GNU/Linux