인식되지 않는 포맷

As a Test:

Hold down the option (or alt) key and launch iPhoto. From the resulting menu select 'Create Library'

Import a few pics into this new, blank library. Is the Problem repeated there?

Post back with the result.

Switch to another User Account and repeat the test there.

Really? I don;t want to solve it until Tuesday.

Can you access the images with Image Capture (in the Applications Folder)