The problem in Proseries with IT-229 is that when all the fields required to obtain consent to allowing the form to be used in the tax return (which is Part  of the IT-229 Form) are filled in and the taxpayer qualifies, to fully activate the Form an amount for real estate taxes must be entered.  However, there is no error message if the taxes are not entered, so the form will not activate even though Part 1 states the taxpayer qualified for the credit.  

It is easy to miss this activating and required entry.