In my store setup I have only selected USPS (Parcel Post, Priority Mail, First Class are selected) and Canada Post (Priority is selected). I'm trying to do a test order with that before I go live and when I add a product to my cart and enter in a US address the drop down for selecting a "Shipping Method" is blank. So I then click the "Calculate Shipping" button below that and it then auto redirects me back to the store page with my products and at the top of that page it has this error:
A critical error has occurred.
Object reference not set to an instance of an object.
UPS and Fedex works but since we don't use those carriers and only use USPS I deselected those from the settings page and now get this error. Is there something I'm missing in setting up USPS?
Thanks!
Andrew