unexpected keyword argument 'context'

Hi,

I am getting this error when creating a sales order.
Here is the traceback

File "/opt/openerp/uat-6.1/server-addons/account_fiscal_position_rule/account_fiscal_position_rule.py", line 133, in fiscal_position_map
    partner_addr = partner.address_get(['invoice'])
File "/opt/openerp/uat-6.1/server/openerp/osv/orm.py", line 368, in function_proxy
    return attr(self._cr, self._uid, [self._id], *args, **kwargs)
TypeError: address_get() got an unexpected keyword argument 'context'

I looked at it and it seems to be working by replacing code with
partner_addr = self.pool.get('res.partner').address_get(cr,uid,[partner_id],['invoice'])