A variable mismatch has been detected.

Hi, so just want to start by saying that I am a huge fan of your plugin. I work for county government and the user interface options are extremely compliant. I am having an issue when I hit the “Click here when you are finished” button the following page loads with the error message “A variable mismatch has been detected.” I am positive it is probably user error but I am quite unsure of where this variable mismatch is taking place.

The page I need help with: [log in to see the link]