Just adding my two cents. I had the same issue with my return being rejected due to Form 8915-F having invalid information populated by TurboTax. Getting a support call got me nowhere, but based on the advice of others in this thread I was able to delete the two related forms that were mentioned, and then went through the retirement income section once again. This time I was successful in getting line C to be clear and box D to be checked. To delete the forms, you go to the Tools section in the sidebar, and there is a link to delete a form. Just got confirmation as well that my return was accepted by the IRS.
Very frustrating that instead of getting a solution from Turbo Tax itself I had to get it from here, and very frustrating that after weeks of waiting they didn't iron out all the issues with the form itself. I've been a loyal customer for around 15 years, but this is the last year. Can't support a tax software if I can't have confidence that the forms are being filled out correctly behind the scenes.
