Make sure to uncheck the efile federal return box, and to check the freeze amounts on the form 4868 box .

Not real specific fix, but just read the form and the reject error.

Thank you for answering! Yes, I have checked and all of them are not marked.

Be sure youve checked the box at the top of the 4868 to Freeze figures flowing to it, or it will pick up all the errors still sitting in the return and fail conversion.

Thank you for answering! Yes, all checked on the top of the 4868 to Freeze. I even tried to "solve" all errors before pressing EF.

If no payment, you shouldnt need to do much more than mark the EF box in Part VII of the fed info worksheet, then mark the Freeze box on the form and enter a zero for the amount youre paying with it at the bottom of the 4868, .  

If youre making a payment, you do have to do a bit more work, here are the instructions

https://proconnect.intuit.com/community/electronic-filing/help/filing-an-individual-extension-form-4...