Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/hamster/stats.py", line 443, in on_facts_row_activated
    custom_fact = CustomFactController(None, model[iter][0])
  File "/usr/lib/python2.5/site-packages/hamster/add_custom_fact.py", line 78, in __init__
    self.get_widget('start_date').set_time(time.mktime(fact["start_time"].timetuple()))
TypeError: 'NoneType' object is unsubscriptable