I have an early 2008 Imac (24", 3.06GHz, 4GB RAM, 750GB Hard Drive, NVIDIA GeForce 8800 GS 512MB). I've had snow leopard on the mac for over 2 years, Iphoto and Aperture work as designed, cameras attached (ipod, Iphone, Nikon D90, Canon point and shoot) all recognize and allowed me to select pictures for import. Iphoto 9, Aperture 3.x and snow leopard. I upgraded just after launch to Mountain Lion (on the list of eligible devices) with the same Iphoto 9 and Aperture 3.x, however, now iphoto and Aperture will not recognize any camera and allow me to select photos for import from any of these sources (pulling the card or hooking the camera up directly). The D90 SD card will show in finder if I plug it into my external card reader and the i devices will show up in itunes (so the computer sees them). None of them appear in Image capture. I would appreciate any advice anyone has to get these cameras working the right way in iphoto and aperture (I almost bought the new Iphoto, but if the cameras don't show in image capture and aperture, I doubt the would in the new iphoto). It appears to be an issue where mountain lion doesn't recognize cameras or their SD cards through Iphoto, aperture or image capture. I've restarted, formatted the SD cards on the cameras, plugged in through a USB dock and direct to the machine, and tried different cables to no effect. Thank you!