Doing taxes for family, need to do Form 8615 (children's unearned income tax based on family income). The 8615 worksheet (#3) has been renumbered by TurboTax from the IRS original, and someone got confused about the instructions for lines M through R. For instance, line M says, divide line C by line M (obviously impossible!). Generally the program puts the right amounts in anyway, but the amount on line Q seems to be wrong.
Generally TT works well.