I am using magento 126.96.36.199 version. I have Customised Reward Points Extension.
In that i need to update Checkout cart Grand Total price while updating the cart based on Discount/Offer applied.(Attached Screenshot).
I used observer
sales_quote_save_after with following code:
$quote = Mage::getModel('checkout/session')->getQuote();
But site is not working after this code inserted.
How to solve it.