Sometimes moving to another section of your return for at least 60 minutes will allow the application to refresh itself. This usually resolves the "snag" Issue. See TurbTax FAQ: https://ttlc.intuit.com/replies/4881977
I see you have waited over 4 hours and seem to still get the same error message. If the above step does not work, I would suggest contacting customer care so they can troubleshoot with you. https://support.turbotax.intuit.com/contact/
