None type object has no attribute search

I read the earlier post, and the answers, and it seems that this issue was supposed to be resolved in a version of OpenERP 5. We are using OpenERP 6.0.3, and I receive the following error whenever I try to update all products, or update just the quantities.

Environment Information :
System : Windows-XP-5.1.2600-SP3
OS Name : nt
Operating System Release : XP
Operating System Version : 5.1.2600
Operating System Architecture : 32bit
Operating System Locale : en_US.cp1252
Python Version : 2.5.2
OpenERP-Client Version : 6.0.3
Last revision No. & ID :Bazaar Package not Found !Traceback (most recent call last):
  File "/usr/local/lib/python2.6/site-packages/openerp-server/netsvc.py", line 489, in dispatch
    result = ExportService.getService(service_name).dispatch(method, auth, params)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/service/web_services.py", line 599, in dispatch
    res = fn(db, uid, *params)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/osv.py", line 122, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/osv.py", line 167, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/base_sale_multichannels/sale.py", line 147, in export_catalog
    self.export_products(cr, uid, shop, context)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/base_sale_multichannels/sale.py", line 138, in export_products
    self.export_products_collection(cr, uid, shop, shop.exportable_product_ids, context)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/base_sale_multichannels/sale.py", line 135, in export_products_collection
    self.pool.get('product.product').ext_export(cr, uid, [product.id for product in shop.exportable_product_ids] , [shop.referential_id.id], {}, context)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/magentoconnect/product.py", line 977, in ext_export
    temp_result = super(magerp_osv.magerp_osv, self).ext_export(cr, uid, [id], external_referential_ids, defaults, context_storeview)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/base_external_referentials/external_osv.py", line 285, in ext_export
    for record_data in self.read_w_order(cr, uid, ids, [], context):
  File "/usr/local/lib/python2.6/site-packages/openerp-server/addons/base_external_referentials/external_osv.py", line 32, in read_w_order
    res = self.read(cr, user, ids, fields_to_read, context, load)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/orm.py", line 2944, in read
    result = self._read_flat(cr, user, select, fields, context, load)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/orm.py", line 3064, in _read_flat
    res2 = self._columns[f].get(cr, self, ids, f, user, context=context, values=res)
  File "/usr/local/lib/python2.6/site-packages/openerp-server/osv/fields.py", line 481, in get
    ids2 = obj.pool.get(self._obj).search(cr, user, self._domain + [(self._fields_id, 'in', ids)], limit=self._limit, context=context)
AttributeError: 'NoneType' object has no attribute 'search'

The capability to fully integrate OpenERP with Magento is vital to our operations. Does anyone have a solution?

Magento is version 1.5.

Thank you,

Cindy