Oleg, Pardon me! I re-checked the responseBody and something has definitely changed since I added the "data" parameter to my POST as you recommended. I decided to redirect the responseBody output to a .html file so that I could easily examine it with my web browser. It now is a web page displaying, among other things, the following messages. Please Try Again Later
We're sorry. We're unable to process your request right now. Please _try again_ (file:///C:/Login) later or call us at (888) 867-5175 for help. Which looks like a temporary problem. Perhaps if I re-run my program, I may get the response I am looking for. Any other suggestions?