Hi, I've downloaded photos from my Casio Exilim camera dozens of times before to this iMac. Today, connecting to the USB port doesn't launch iPhoto, nor does the device show up on desktop. I tried using Image Capture, and got the msg no camera or scanner connected. I've got Mac OSX 10.6.8 with 3.06 GHz Intel Core 2 Duo. What is the fix? Thanks, Nora