Hi.  I'm running a local test copy of Odoo v8.

I receive the following error while trying to install POS.  Any ideas?

raise ValueError('External ID not found in the system: %s' % (xmlid))
ParseError: "External ID not found in the system: stock.stock_location_stock" while parsing /opt/odoo/odoo-server/addons/point_of_sale/point_of_sale_data.xml:11, near
<record id="picking_type_posout" model="stock.picking.type">
            <field name="name">PoS Orders</field>
            <field name="sequence_id" ref="seq_picking_type_posout"/>
            <field name="default_location_src_id" ref="stock.stock_location_stock"/>
            <field name="default_location_dest_id" ref="stock.stock_location_customers"/>
            <field name="warehouse_id" eval="False"/>
            <field name="code">outgoing</field>