Can't Connect to Nightfall Battlegroup

I can connect to any server that isn't in the Nightfall battlegroup, but can not log into any Nightfall servers after the restart this morning.

I know it is live because friends of mine are back online on the server. At the realm select screen when I select Arygos, or any other Nightfall server, the "Logging into Game Server" Dialog box appears for maybe 30 seconds, then disappears.