error message

Hello again,
I am getting the following error message and can't seem to find any 
information on it and am hoping someone here can help.
Error message:
	Spyce exception
	File:	/var/firstproject/www/testagain.spy
	Message: 	AttributeError: 'Mapper' object has no attribute '_Mapper__props'

	Stack:	/usr/share/spyce-2.1/sqlalchemy/orm/mapper.py:152, in _get_props: 					
	return self.__props

	/usr/share/spyce-2.1/sqlalchemy/orm/query.py:371, in compile:
	

	for key, value in self.mapper.props.iteritems():

	/usr/share/spyce-2.1/sqlalchemy/orm/query.py:231, in select_whereclause:
	

	statement = self.compile(whereclause, **kwargs)

	/usr/share/spyce-2.1/sqlalchemy/orm/query.py:226, in select:
	

	return self.select_whereclause(whereclause=arg, **kwargs)

	/usr/share/spyce-2.1/sqlalchemy/orm/mapper.py:1115, in select:
	

	return self.query().select(arg=arg, **kwargs)

	testagain.spy:7, in (main):
	

	time = db.timetable.select()

Thanks in advance for any help.
MJ

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