Order import Error with no shipping_address in Magento

[David]

I'm getting this error when the shipping_address isn't defined for example because there is a coupon etc:

2013-05-14 08:43:10,293 32091 ERROR ? Dia Website: 'list' object has no attribute 'get'
Traceback (most recent call last):
  File "/opt/openerp/server/openerp/addons/base_external_referentials/decorator.py", line 130, in wrapper
    response = func(self, import_cr, uid, external_session, resource, *args, **kwargs)
  File "/opt/openerp/server/openerp/addons/base_sale_multichannels/sale.py", line 609, in _record_one_external_resource
    order_mapping=mapping[mapping_id], defaults=defaults, context=context)
  File "/opt/openerp/server/openerp/addons/base_sale_multichannels/sale.py", line 593, in check_if_order_exist
    context=context)
  File "/opt/openerp/server/openerp/addons/base_external_referentials/decorator.py", line 49, in wrapped
    return func(self, cr, uid, argument, *args, **kwargs)
  File "/opt/openerp/server/openerp/addons/magentoerpconnect/sale.py", line 409, in _transform_one_resource
    resource = self.clean_magento_resource(cr, uid, resource, context=context)
  File "/opt/openerp/server/openerp/addons/magentoerpconnect/sale.py", line 595, in clean_magento_resource
    if not resource['shipping_address'].get('customer_id'):
AttributeError: 'list' object has no attribute 'get'