Thanks for the quick reply. I removed ..
// this starts the session
// echo variable from the session, we set this on our other page
echo "Starting to output current session data";
and put in the error output message you showed me. When they page loads, I still get a header error (image attached). When I submit, I sent the second error (image attached).
Sorry, I'm new to php... I guess I was trying to session_start() twice on one page. It's still doing the same thing.