I'm having a similar problem. Filled out the casualty loss form for Hurricane Irma & my return was rejected because I have capital loss carryovers and sale of business property but I don't have capital or a business. I don't think you are missing anything...sounds like a software problem. I'm using TurboTax Deluxe 2017. You will have to contact TurboTax by logging in at the start screen, click on HELP then at the bottom of the pull down screen, click on CONTACT US, describe your problem then they will ask for your phone number.
