[future_trunk] import images broken

Traceback (most recent call last):
  File "/usr/local/openerp/openerp-server/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/usr/local/openerp/openerp-server/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/usr/local/openerp/openerp-server/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/usr/local/openerp/addons/magentoerpconnect/magerp_core.py", line 257, in sync_images
    product_obj.import_product_image(import_cr, uid, product_id, referential.id, conn, context=context)
  File "/usr/local/openerp/addons/magentoerpconnect/product.py", line 1080, in import_product_image
    ext_id = self.oeid_to_extid(cr, uid, id, referential_id, context=None)
  File "/usr/local/openerp/addons/base_external_referentials/external_osv.py", line 159, in get_or_create_extid
    res = self.get_extid(cr, uid, openerp_id, external_session.referential_id.id, context=context)
AttributeError: 'int' object has no attribute 'referential_id'
2012-05-06 05:08:31,558 30813 ERROR ? openerp.netsvc: 'int' object has no attribute 'referential_id'