Just finished a shoot with my 5D MKIII, got home, offloaded it, and Photoshop didn’t recognize the files, and Preview was showing broken pictures.. Strange. I tried with Adobe’s DNG converter – broken pictures again.
I’m not going to touch the “Hackintosh” issue, which is usually a bit buggy. Are you on CC 2014 or 2014.1? There was a large update in early October. However, since you’re running a Hackintosh you’ll want to verify if others are successfully running the latest CC, if your GPU drivers are compatible, etc, etc.