Same! We'll probably just end up mailing ours if it doesn't work tomorrow.
btw I was on a support call last night for ~3 hours. They said that if it was a specific form that was preventing the E-file, then the error message should call that form out. They said that it could be the system being bogged down from lots of people trying to submit at once? but there was no 100% concrete cause of this problem.
