MW_RewardPoints

1. Open mw_rewardpoints/checkout/onepage/rewardpoints.phtml file and find the following lines (~100-108):

   onComplete: function(data) {
       $('checkout-payment-method-load').update(data.responseText);
       if($('mw-osc-column-container')){
           updatePaymentMethod();
           checkout.setLoadWaiting(true);
           var params = Form.serialize(this.form);
           $('review-please-wait').show();
       }
   }
   

2. Replace them with:

   onComplete: function(data) {
       $('checkout-payment-method-load').update(data.responseText);
       if($('mw-osc-column-container')){
           updatePaymentMethod();
           checkout.setLoadWaiting(true);
           var params = Form.serialize(this.form);
           $('review-please-wait').show();
       }
       if (typeof FireCheckout !== 'undefined') {
            checkout.update(checkout.urls.shopping_cart);
       }
   }