Comment 3 for bug 1054059

I've tried to add the shop_id manually before it is reading defaults by adding defaults['shop_id'] = 1 in sale.py on line 382.

Looks like this:
if not defaults: defaults={}
defaults['shop_id'] = 1
local_defaults = defaults.copy()

Now the function create_onfly_partner() works but it throws in another function an exception now:

Server Traceback (most recent call last):
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\web\common\http.py", line 593, in send
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\netsvc.py", line 360, in dispatch_rpc
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\service\web_services.py", line 586, in dispatch
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\osv\osv.py", line 167, in execute_kw
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\osv\osv.py", line 121, in wrapper
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\osv\osv.py", line 176, in execute
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\.\openerp\osv\osv.py", line 164, in execute_cr
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\report.py", line 343, in retry
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\decorator.py", line 49, in wrapped
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\magentoerpconnect\sale.py", line 435, in _record_one_external_resource
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\decorator.py", line 130, in wrapper
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_sale_multichannels\sale.py", line 565, in _record_one_external_resource
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_sale_multichannels\sale.py", line 549, in check_if_order_exist
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\decorator.py", line 49, in wrapped
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\magentoerpconnect\sale.py", line 414, in _transform_one_resource
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\magentoerpconnect\sale.py", line 392, in create_onfly_partner
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\external_osv.py", line 686, in _record_one_external_resource
  File "C:\Program Files (x86)\OpenERP 6.1-20120816-233414\Server\server\openerp\addons\base_external_referentials\external_osv.py", line 1379, in _transform_one_resource
  File "<string>", line 1, in <module>
TypeError: unsupported operand type(s) for +: 'NoneType' and 'str'

This happens when defaults['shop_id'] is manually set.