Thanks, but that is not it. Both of those fields were entered as you suggested, for both parents.
I should also have added that on P1 of the 1040, in the dependents section, the two older boys are listed in Col 5 as "credit for other dependents" and the baby in Col 4 as "child tax credit". I've gone over the input for each child and all the entries (except for name, birth date and ss#) are identical.
I do not know if this is part of the problem or is a separate issue.
