Quote Originally Posted by lat9 View Post
In this case (a virtual order), OPC has determined that the order is "virtual" and has set the shipping to free_free.


Would you create a single-shot OPC debug for my review and send the file (they're pretty large) to my direct email address?

To create that debug-file for just this issue, logout then log back in and navigate to the initial checkout_one page. Then, delete the associated customer's OPC debug file, click the Confirm/Review button and send me the copy of the debug-file that contains only that transition's processing.
After a lot of guessing and searching, I decided to look up "net::ERR_CONTENT_DECODING_FAILED 200", as that was the javascript error generated.

That brought me to this page on stack overflow. There too solution was to add some code to fix gzip compression. That made me remember, I had the switch GZIP_LEVEL set to 1 (on). After switching it to 0 (off). the order continues as it should,without errors