My earlier thread, "eCart5/confirm page fails to load payment page," was resolved, but this thread is not. When I redid the checkout pages for local processing, rather than the "order receipt page" rendering, I received the message that I attached earlier.
You then asked for the zip files to study which I also attached earlier.
I'm writing this hoping that there is no confusion between this thread and the earlier thread.
Please help me resolve this because it's the last thing left for me to do on this project before handing the site off for browser testing.