I had the same problem this year. I went back through my federal return error check and there were no problems, as found previously. When I went back to my state return for an error check, I found that Turbo Tax was not indicating an error on tax forms that it pulled up, unless you scrolled all the way through the form and looked for pink highlighted line items. There was no indication of an error at all above the form. You could go right to the next form if the error happened to be further down the page than showed when the form opened.
I think Turbo Tax should zoom right to the error when it pulls up a form, let you correct it, then take you right to the next error (if there is another one), etc.
So, scroll through the forms that Turbo Tax pulls up in error check, and look for those pink highlighted line items on the form.
