I just filed mine on Feb 12 abd I did have that issue with line 18. I talked to turbo tax live person and shared my screen with her. She had no idea what I was talking about at first but after the reading if I want to defer my income tax??,she said to just put 0. This is a new form this year and I don't think Turbo tax knows very well either:( Anyways, i didnt want and wasnt eligible for tax deferral so I went ahead and put 0. Everything went through and my return got accepted this morning(Feb 13).
