t took me a while to find this one and solve it. I had tried the optional state sales tax and entered the state sales tax rate on one line and the local sales tax rate on another. Both had entries for 1/1/2016 to 12/31/2016 so the total was more than 366 (732 days!) The solution was to go back in the options and total the all the rates into one total rate and delete the other sales tax entry. Smart check passes, no more problem.
