Hi. I recently bought a Galaxy S2 for Sprint and began using the camera. I transfer the pics to the micro sd and transfer them to my mac (10.6.8). Some of the pictures are fine, but on most I get the message: The file “xxxx.jpg” could not be opened. It may be damaged or use a file format that Preview doesn’t recognize." They won't open in photoshop either. Has anyone heard of this happening? I've switched sd cards to no avail. The weird thing to me is that about 20% of the photos are fine. Any suggestions would be welcome. Thanks.