I received the same message. Was trying to e-file both Federal and State form at the same time. File them SEPARATELY and Federal form filed OK; state form got error. To file separately: Back up a few screens to "Select Your Forms for E-Filing". Select only Federal. Then go thru remaining e-file screens until transmitted. Then back up and select state form and do the same. State form got error. I ended up mailing in state form.
