[6.1] Crash on import orders NoneType external_osv.py

[Sami]

Pretashop 5.0.17

Everything on the Prestashop Instances page works, but going to the Prestashops Shops page, I can not import anything as it ends up in a crash. Thoughts?

Stack trace:
Server Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/openerp/addons/web/common/http.py", line 593, in send
    return openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 586, in dispatch
    res = fn(db, uid, *params)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 167, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/usr/lib/pymodules/python2.7/openerp/addons/base_sale_multichannels/sale.py", line 315, in import_orders
    self.import_resources(cr, uid, ids, 'sale.order', context=context)
  File "/usr/lib/pymodules/python2.7/openerp/addons/base_external_referentials/external_osv.py", line 554, in import_resources
    external_session = ExternalSession(browse_record.referential_id, browse_record)
  File "/usr/lib/pymodules/python2.7/openerp/addons/base_external_referentials/external_osv.py", line 118, in __init__
    self.connection = referential.external_connection(debug=self.debug, logger = self.logger)
TypeError: 'NoneType' object is not callable

[Caner Candan (canercandan)]

Hi there, I get the same issue:

…
TypeError: 'NoneType' object is not callable
Oct 15 20:48:33 test OpenERP Server 6.1-1:?:ERROR:openerp.netsvc:'NoneType' object is not callable
…