I have a similar problem. I have installed the “wp e-commerce” version 3.8.7.6.2 and the “gold cart for wp e-commerce” version 2.9.7. and the issue is this, I add a product to the cart, and then go to the checkout page, in there I choose the country, the estate (I use it just for USA) and the zip code and click on calculate. then appears the usps options and the usp options, by default is set the ground option and the shipping rate is calculated with the total price, if a choose other usp option, the cart is automatically updated with the shipping rate, but when I choose an usps option, the cart doesn’t calculate the shipping rate and only show the total price calculated with the price of the product and tax.
I have revised the code, and I found that the problem should be in the file cart.class.php, and I found 2 function where the problem is probably generated, the function “update_shipping” around line 733 and function “get_shipping_option”, there you can find how it works the shipping calculation, but when it’s choosen an usps option, the reference to this shipping option is lost.
thanks for your help
