My DSLR is a Nikon D90.
I also have a Paul C Buff [PCB] Einstein.
For whatever reason i just could NOT get the Cyber Commander [CC] to work in the hot shoe of my D90.
Screw it, for months ive been using the PCB trigger for their AB line of strobes and that worked fine except i was in effect using my CC as a light meter only.
So, i got to thinking that i MUST be doing something wrong and again attempted to see if i could get the CC to work in the hot shoe of my D90 looking in depth again at all my camera settings; TTL, Manual, Commander.
After sending a quick email to PCB tech support, they recommended using the cable that came with the CC in use with a hot shoe adapter, luckily i had one sitting around on. I tried using that... and it worked... intermittently. Either the hot shoe adapter i was using... or the cable.. didnt have a good connection and wasnt 100% reliable.
Back to trying to figure out HOW to get the CC to work in the camera hot shoe like IT SHOULD.
After a while i simply activated the on-camera flash. Either on Manual and set to the lowest setting [1/128] or in Commander Mode set too "Built in Flash Mode --", "--" i believe this sets the flash to trigger other flashes or strobes slave sensors and is not meant to actually throw any light on your subject.
This is the best way i have found to use my Cyber Commander with my D90's hot shoe.
If you find this helpful, let me know.
If you have a better solution, let me know also.
NEXT on my list of things to figure out:
Setting up the CC to work not only with just the Einstein alone but also with an AB1600 and/or AB800.