Get your taxes done using TurboTax

I am not a high income individual.  I am filing single, as I did last year.  I paid 100% of last year's tax liability, evenly, on-time,  over 4 quarters.  Turbo tax calculates that I owe an underpayment penalty, because, I think, it does not know what my tax liability was for last year.  How do I enter that information?

 

I tried entering it manually, on my tax history worksheet--to no avail. How can I correct/override TurboTax?