since you are on a windows machine, go to the forms mode ( on the top ribbon select "edit" and then from the drop down select "forms") and go through the form1040 and then schedule-1 and follow through to see where the error is coming from. Do not make corrections on the forms . Once you know where the error is , go back to interview mode and go back till you find where the questions was mishandled.
If you need more help, please say so in comments
