After you file

Try using a 0 (zero) for the 2015 AGI.  If that is also rejected then print and mail the tax return(s).  See this TurboTax support FAQ for the procedure for printing and mailing - <a rel="nofollow" target="_blank" href="https://ttlc.intuit.com/questions/1944348-how-do-i-print-and-mail-my-return-in-turbotax-online">http...>