I had the same type of error message! Me and my wife work in KS and we filled out the state reciprocity tax credit stuff, but I got this message that Mo wasn't "ready yet". All this despite me filing just today, (the 12th of Feb). I think it's a bug. I just told them I was going to send a check to MO for 82$, (for some reason?). I don't owe MO any money as far as I know. I feel like Turbo Tax used to be easier, and less buggy.
