So I've been dealing with this issue since Yosemite came out. The basics: Nikon D3200 with several 64 gig class 10 memory cards, Nikon and Rokinon Lenses. I previously stored my raw files in the iPhoto - it wasn't ideal but it allowed me to store them and view them. After Yosemite came out I updated and the following happens occasionally: Nikon .NEF raw files sometimes come out like this: Or it comes out like this: The picture is SUPPOSED to look like this: The recommendation from the Apple support site was to: Go to: System/Library/CoreServices Then delete RawCamera.bundle and RawCameraSupport.bundle Reboot then reinstall the 5.6 raw support (not the more current one). That's what Apple recommended anyway. It will then work for a while - but within a few days new imports show up like this: Or: Then I have to do the process all over again. I see that there was a fairly large amount of people complaining about this. Extremely frustrating. Word is it happens with ANY app on an Intel Mac that uses RAW files (.NEF) be it iPhoto, Aperture, Lightroom, Preview, The Gimp, etc. Anyone else experience this? Anyone else have a better fix? Apple better push Photos out with a new .RAW update or they're going to have photographers leaving in droves. This is insane!