1.83 MBP, 100/1.5, 10.4.6, everything up to date. My new camera came today (Canon a530), and I snapped a few pictures (mostly of a protesting girlfriend). When I plugged in the camera, iPhoto started up, and then proceeded to tell me I needed to update my library to be compatible with v6.0.2. I don't know what it did, but nearly all of my photos are just blank gray squares that won't load. The only exception is a few shots I took last fall. Also, whenever i try to edit one of the shots I took last night, all I get is a beachball and have to force quit. Please help.