Error
Traceback (most recent call last):
  File "/home/marius/workplace/rifas/trytond/trytond/modules/trytonlt/tests/test_stock_invoice.py", line 125, in test_invoice_line_quantity_change
    invoice_line.quantity = Decimal('12.')
  File "/usr/local/lib/python2.7/dist-packages/proteus/__init__.py", line 132, in __set__
    super(FloatDescriptor, self).__set__(instance, value)
  File "/usr/local/lib/python2.7/dist-packages/proteus/__init__.py", line 82, in __set__
    instance._on_change(self.name)
  File "/usr/local/lib/python2.7/dist-packages/proteus/__init__.py", line 857, in _on_change
    list(to_change), context)
  File "/usr/local/lib/python2.7/dist-packages/proteus/config.py", line 149, in __call__
    result = rpc.result(meth(inst, *args, **kwargs))
  File "/home/marius/workplace/rifas/trytond/trytond/model/model.py", line 533, in on_change_with
    changes[fieldname] = getattr(self, method_name)()
  File "/home/marius/workplace/rifas/trytond/trytond/modules/trytonlt/anglosaxon/line_move.py", line 135, in on_change_with_line_moves
    return self.line_moves
  File "/home/marius/workplace/rifas/trytond/trytond/model/modelstorage.py", line 1191, in __getattr__
    return super(ModelStorage, self).__getattr__(name)
  File "/home/marius/workplace/rifas/trytond/trytond/model/model.py", line 566, in __getattr__
    % (self.__name__, name, self._values))
AttributeError: 'account.invoice.line' Model has no attribute 'line_moves': {'currency': Pool().get('currency.currency')(1