Paypal payment notification refused:invalid amount

We're having an issue with the way product options are being sent to Paypal for payment. We have a product that costs $19.95 and an option that costs an additional $14.95. We are grouping the options with the main product so that in the cart the two products are combined in one line item with a cost of $34.90.

The issue is that when the customer is redirected to Paypal the main product is listed as $34.90 and the option is also shown as a second item with an additional $14.95 fee, which makes the Paypal total $49.85.

Add the line:
if($product->order_product_option_parent_id) continue;

after the line:
foreach($order->cart->products as $product){

in the file plugins/hikashoppayment/paypal/paypal.php and that will fix the problem.

We'll fix that properly in next version of HikaShop.