I get msg "unexpected transmission problems beyond our control'. when trying to efile from MAC. They call it a "technical hiccup". Anyone know what I should do?

Full msg: "Your Transmission Didn't Go Through
TT was unable to send your return to the Intuit Elec Filing Ctr, for the following reasons: Due to unexpected internet transmission problems beyond our control, your returns were NOT received by the Intuit Elec Filing Ctr.  You should re-file your returns now.  Looks like we've had a technical hiccup.  Try e-filing again.  If that doesn't work you can print your return and file by mail.