Yesterday I was working on a photoshoot, tethered my 5Dmk3 to my iMac (late 2015 21") with updated Lightroom CC (2015) with a tether pro cord. At the end of the day 581 photos loaded through tether, and when I loaded the card that I had in the camera, I had 1431. Cord wasn't being unplugged, or disconnected. Any reason not all would load? Computer maybe too slow? Lightroom can't handle the capacity? Faulty Cord?