A very quiet Pad 39A.
NASA controllers called off the launch attempt Friday due to continuing problems with a hydrogen leak in the system that carries off excess hydrogen gas. The gas must be vented safely to avoid ignition and a catastrophic fire. Unfortunately, after the launch attempt had been scrubbed, a further problem was detected- a crack is forming in the outer coating of the External Tank which houses the liquified hydrogen.
The next attempt will be no earlier than November 30th. NASA reports that the astronauts have been sent back to Houston for additional training and preparation while they wait for repairs.
Bummer day for NASA, eh?