Dla produktu który został "zduplikowany" nie mogę wygenerować kodu EAN13.

Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 530, in _handle_exception return super(JsonRequest, self)._handle_exception(exception) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 567, in dispatch result = self._call_function(**self.params) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 303, in _call_function return checked_call(self.db, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/service/model.py", line 113, in wrapper return f(dbname, *args, **kwargs) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 300, in checked_call return self.endpoint(*a, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 796, in __call__ return self.method(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/http.py", line 396, in response_wrap response = f(*args, **kw) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 953, in call_button action = self._call_kw(model, method, args, {}) File "/usr/lib/python2.7/dist-packages/openerp/addons/web/controllers/main.py", line 941, in _call_kw return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs) AttributeError: 'product.product' object has no attribute 'generate_ean13'

W pierwszej chwili pomyślałem "wywalił sie moduł product_barcode_generator i chyba faktycznie, nie daje się upgrade'ować. Czy ktoś się spotkał z tym problemem ?