The account you created for me gives error.
But anyway, here i am providing you the solution. You can apply the coding patch by yourself. It is very easy.
Open this PHP file:
/templates/YOUR_TEMPLATE/html/com_virtuemart/cart/default_pricelist.php
Find these 2 lines:
(31st and 32nd lines)
$SelectShippingAjax = "jQuery('#selectshippingContent').load('". JRoute::_('index.php?view=cart&tmpl=component&task=edit_shipment',$this->useXHTML) ."')";
$SelectPaymentAjax = "jQuery('#selectpaymentContent').load('". JRoute::_('index.php?view=cart&tmpl=component&task=editpayment',$this->useXHTML) ."')";
and replace them with these:
$SelectShippingAjax = "jQuery('#selectshippingContent').load('". JRoute::_('index.php?option=com_virtuemart&view=cart&tmpl=component&task=edit_shipment',$this->useXHTML) ." #userForm')";
$SelectPaymentAjax = "jQuery('#selectpaymentContent').load('". JRoute::_('index.php?option=com_virtuemart&view=cart&tmpl=component&task=editpayment',$this->useXHTML) ." #paymentForm')";
This will fix the issue for sure.
Regards,
Support