It worked for me after putting $1 in box 1. You will be asked "How much of the 1.00 in box 1 is difficulty of care payments?" with three choices: All of it, None of it, and Some of it. I selected None of it. I then entered the amount in W2 box of 3 and 5 into the box asking for the total amount of difficulty of care payments I received. By doing so, the unable to e-file error is gone, allowing me to continue with e-file process. Hope this helps.
