For the second night in a row, SpaceX postponed the launch of a Falcon 9 rocket carrying the SES-9 communications satellite February 25.
SpaeX said that there was a last-minute problem with propellant loading.
SpaceX halted the countdown 1 minute and 41 seconds before the scheduled liftoff of the rocket from Cape Canaveral, Florida.
The original launch was planned for February 24.