We had the same problem on a Mac. Amber at Turbo Tax was able to help us. First we cleared the cache in both Safari and Google Chrome (cookies, history, etc.). Then we made Chrome our default browser (this is the browser that works best with Turbo Tax.) Shut down computer for a few minutes. When we restarted and opened Turbo Tax there was a Turbo Tax update that we had been unable to see when Safari was our default browser. After the update was installed we were able to successfully file our taxes (fed and NY). I don't remember all the steps to clear the cache, but you can find directions for that online, I'm sure. Hope it works for you.
