New York return will not file

When I click file tab, Turbo tax replies just one more matter: A popup asks for amount on box 14a of a 1099-R from Vanguard. There is a Box 14 that has $0.00 indicated, but no 14a on the 1099-R. I have tried to put $0.00 (the amount in my Box 14) in the pop-up box indicated, but no luck. The return will not e-file. The Federal return went through and I have received my refund. HELP, please!