I have the same situation in that I have a balance carried forward that temporarily blocks moving forward with my return and would cause having to mail the forms.
What I did was to go back and take the standard deduction instead of the credit.
I was able to then efile. Fed. and state were accepted.
Went back into Turbo Tax and filed a X1040 amended form changing from standard deduction to asking for the credit (went rather seamlessly) and again ran into the wall that I must wait till March 31st for the updated form that will process the carry forward and have to file by mail. I can "deal" with waiting for the credit. Hopping I didn't somehow shoot myself in the foot. Hope that helps
