I was updated my store to 1.3.9d and adding this module to it. I noticed there is a line missing in the includes\classes\order.php. The missing is around line 508.

Code:
"$this->notify('NOTIFIY_ORDER_CART_SUBTOTAL_CALCULATE', array('shown_price'=>$shown_price));"
For this module, was this line left out on purpose or is this line suppose to be there?