Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/conduit/gtkui/Database.py", line 290, in on_iter_nth_child
    return self._get_oid(n)
  File "/usr/lib/pymodules/python2.6/conduit/gtkui/Database.py", line 115, in _get_oid
    (oid,) = self.db.select_one("SELECT oid FROM %s LIMIT 1 OFFSET %d" % (self.table, offset))
TypeError: 'NoneType' object is not iterable