There was nothing in the error logs, but I think I figured out the problem about the same time I got the notice of your answer.

I had generated a random API key, and it contained special characters.  After looking at the code in the cart to see what actually throws that particular area, I figured out where to go to look. I changed the API key to remove any special characters and it seems to at least think it is sending.

I'm now fighting with the fact that there was no MX record in my DNS setup for some reason, so I can't send still, but at least I believe the issue is no longer in the cart software.

Thank you for the reply.

Duane