TurboTax Business 2016 Schedule D The Capital Gain and Losses Smart Worksheet can only input few transitions. From transition number No. 6, it will not do any math.

[d-horowitz]

I have just started using TT Business.   I only had 3 Sched D transactions so I didn't run into your issue.  However, TT could not complete my return because it was missing 5 forms from the IRS.   Hopefully, when those forms become available Intuit will fix both your problem and mine.