Hi Office Guy:
Again, thanks for the reply. The page reloads correctly until I apply the above mentioned server behavior. But just as a test I did set the permissions to full (777) on the WA_eCart folder and files and it had no effect. Additionally, I built a second store and tried the same process and got the same results.
The site is live, but not open for real orders. See www.goesgreenstore.com. Line 21 of confirm.php is:
It does not break until I add the server behavior.