I have the same problem with Alabama/Georgia returns. This work around works if you don't put anything else on the 2nd line except the state. It calculates correctly and shows up properly on the printable tax forms. However if you had taxes withheld in both states and enter those in the W-2 boxes along side each state (and leave the income field blank on your resident state) the turbotax calculations are correct, but the company shows up twice on the printable tax form: one line with withholdings and 0 income and one line with income and no withholdings. In 2014 Alabama turbotax there was an income worksheet you could check to exclude the income so the same income wouldn't show up twice. i.e. an override. it's not there yet in tubotax 2015 (as of 3/19/16).
