When a customer goes to the "My Orders" section they can see and select their orders as expected.  When they click on the "Invoice" link for any given order, however, it directs them to a page that returns nothing - it's completely blank.  No error, but no content. It's just a 4 line HTML document with an empty body tag.  I did create an Invoice Template to see if that made a difference, but it did not.

DNN 6.01.02
SmithCart 4.87

Yes, the BuyNow page is set.  The orders show up.  Selecting an order works and I can view the order details.  Selecting the invoice simply fails.

I'm unable to upload a screen shot as I keep getting an error when I try to upload.