Try this work around and see if it works. In the main Dividend entry screen, click the box "My form has info in other boxes" to open up the entire 1099-Div screen and enter your state in the state in box 13 then continue. Go through and enter you US Govt Divs portion then do your review and see is you get the error. You may need to delete the 1099-Div and re-enter.
