Don't believe the steps above. It's not an issue on your side, it's a transmission issue. I just spent 2 hrs with troubleshooting tech support and did all those steps with no fix. I then got frustrated and tried to re-file over and over again (about 10 times in 2 minutes) and each time I saw the progress get closer and closer until on the 10th time if actually confirmed it worked.
Just keep re-filing and it will eventually go through.
