T-0 of the new Falcon 9 rocket now reset for 10:43 am EST this morning from Cape Canaveral.
The launch countdown earlier got down to just under 3 minutes before a hold was called followed by an engineer shouting, "Abort, abort, abort!".
SpaceX announced later that, ""We had a false abort on the Ordnance Interrupter (OI) ground feedback on position in our terminal count".
Adding that a false telemetry reading caused earlier abort.
The countdown has been recycled to the T-13 minute point and holding.