anyone any idea why a D3 that will fire a SB-900/SB-800 without any problem will not fire a radio trigger mounted in the hot shoe? I have two D3 bodies - same on each. Trigger fires from the D2Hs no problem - or from the D3 if the radio trigger is connected with a short cable to the sync socket. TIA!!

I have no idea, apart from mentioning the obvious (is the hot shoe disabled in the custom functions?) I'm stumped.