You can't proceed further because one or more of your tax forms is currently unavailable. None of the forms apply to me, why am I getting this error?

Please verify that none of the forms you are using are locked: TurboTax FAQ: Why does TurboTax say my forms are locked or haven't been finalized? 

If you are not using any locked forms, we suggest you to contact our Product support team. They have access to tools we don't have here in Community, like screenshare to investigate this issue for you.  

Thank you for choosing TurboTax.