Okay, I'll try to explain this the best I can. We bought 2 new 16 GB San Disk Extreme HD Video cards (level 10's) for our Alaska trip. Upon loading them from our card reader, we're having a devil of a time. For some reason they load some of the images with the 'IMG' before the number of each image, but then many of the images load with only the 'MG' part, leaving out the 'I' in front of IMG. This, of course, causes our images to load in the wrong numbered order. This does not happen with our lower capacity cards. They seem to load just fine without this problem. So first of all, I'd like to know if you think the cards are defective. And secondly, is there any way to prevent this from happening? Thirdly, I can go in and rename all the 'MG' images to 'IMG', and that solves the problem. But it is taking for ever! Is there a way I can do this in a batch by any chance, doing all of them at the same time? I would greatly appreciate any help you can give.