Paul C. Buff, Inc. Technical Forum

I have a Cybersync CST transmitter and two CSRD receivers. I hook up everything to my speedlights (a 580ex and a 550ex) and when I take a shot or use the test button. one will fire. I take another shot and the other will fire. but never both at the same time.I've switched them, tried every combination I can imagine and nothing seems to be working. Any suggestions?

Okay never mind... I'm an idiot. One of my flashes was in master mode and one in slave. I turned them both off and they work perfectly. DUH