Blue simply means you are not getting light from the strobe onto the subject, either because the strobe is not firing, or not firing at the right time, or is too far from the subject, or is not pointed at the subject. Do you have any really close pix u/w, or is everything pretty far away?Thanks. I just picked those two shots because I hadn't yet adjusted the white balance. I had some where I was a foot away with the same blue hue. Fiber cable was in the correct port.