An infinite number of monkeys pounding on an infinite number of keyboards will eventually write Hamlet. ;-)
1. I have credentials for Fedex and for USPS. USPS is the one I've been testing against with Express (mail) selected. If I change the selection to First-Class, it appears to process as expected. (Read: Express don't work.) So I am able to get postage input onto the confirm page. But it still breaks.
2. I moved the diagnosis script down below the doctype headers on the Checkout failure page, so now the script is NOT at the very top of the page -- and now it echoes on failure. Here is what I am currently getting:
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /homepages/44/d314764825/htdocs/checkout_failure.php:3) in /homepages/44/d314764825/htdocs/checkout_failure.php on line 4
I hope this helps someone help me.