I had the same issue - stuck on that medical miles sheet. I then chose the "topic list" at the top of that page, clicked on the next topic to be completed, used the 'back' button which got me to that same medical questions area. 'Continue'd thru them and when I got to the miles sheet, it had filled in the miles I had totaled on the Supporting Detail window. I could then continue on. This worked for me, hopefully it will work for you. I'm no expert, just someone trying to do my taxes.
