Form 5695 - IRS rejecting because of Address Error

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Submitted federal tax to the IRS three times and received the following rejection each time.

/Return/ReturnData/IRS5695/ResidentialCleanEnergyCrGrp/ResidentialCleanEgyHomeAddress/StateAbbreviationCd - Data in the return is missing or invalid. Please double check your entries

Talked to 4 Turbo Tax support people and no one knew what the problem was. Some tried very hard to find a solution. One was very thorough and agreed with me that the form was filled out correctly.

I finally deleted the form 5695 and stepped through Home Energy Credits in Step-by-Step and resubmitted to the IRS and the IRS accepted the return.