I've already spent an hour apiece with two different TT support reps, with no resolution. I was able to file Federal easily; this problem occurs on entry to paying the $20 fee for State file, with no available exit from the loop . TT should simply waive the fee after all the time I've wasted. If I have to file State by mail it will be months before I get my refund. If this isn't resolved soon it will certainly be the last year I use TT.
Does the payment information on your card match the address on your tax return?
Yes, it would if I even had a chance to enter payment info. But the error dialog first appeared when I clicked "pay with credit card" (vs other option, to deduct from Federal refund). Now it appears as soon as I try to enter the next screen from "Federal taxes successfully filed, let's file your State return", or some such. I haven't been able to move past that without getting the "Hmmm..." dialog.
Were you able to solve your issue?
If not, please call TurboTax Customer service. Here is a link: Turbo Tax Customer Service