If you have something on the scale when you create an order, it should use that weight by default and not require you to manually click the "Update" button. That way, we can click "Buy and Print Label" immediately when the page loads, increasing efficiency. 

I think this is what makes the "Buy Label" button not work on the Add Order screen. When you click the Buy Label button, it shows the message "An error occurred. <view order link>." When you go into the order and click "update" next to the weight, it allows you to Buy and Print the label.