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Chuck's right. Check your batteries in both the Sekonic and the Pocket Wizards, and then make sure that your PW antennae are not pointed horizontally toward the meter, or toward the triggering PW on your camera. They need to be either upright or crossed, but not pointing toward each other, to maximize their coverage. David Hobby recommends angling your Pocket Wizard antennae on your strobes at a 45 degree angle, so whether you're shooting horizontally or vertically, the camera's PW antenna will present itself to the strobes' PWs with the best shot at good coverage. My guess is that it's a battery problem in the Sekonic, though.