Sigh. Same as you, @ianfarris98... I've tried twice today to transmit my (federal, MO, KCMO) taxes and gotten the error both times. I double-checked the Intuit tax form availability page (https://form-status.app.intuit.com/tax-forms-availability/formsavailability?albRedirect=true&product...) and it says that Form RD-109 is available. So I don't know what the hangup is now...
