Road Block with MA form B/R

For the few who try to file form 1041 and  MA form 2, I got stuck at form B/R.  I solved it by entering 1.00 in this line on Form B/R "Percentage of Income"  In my educational training, percentage would be 100%.  Further, this box would not accept 0 when I entered 0 for income.  Took only 10 hours of reading directions, and then trial and error trying to enter 1.000 in this box.  RJW