http://www.nikonchat.com/nikon-as-15-adapter/
Why does not my Nikon D90 flash pop my study.?
I own a Nikon D90 and bought a AS-15 adapter. My camera will only appear my 2 studio flash once (the initial plug my first sync cable), then not appear again unless I unplug my sync cable and plug it back What can I do?
Nikon 800.NIKON-UX first call and see what they have to say. Next call the manufacturer of studio flash units and see what they say. When using studio flash units, use a power source connected to three flash units and then I use my Pocket Wizard receiver in the supply energy and the other in the cameras hot shoe
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