I am running OSX El Capitan. I had been using Photoshop CC 2014 and everything seemed to be fine. I decided to upgrade to CC 2015 and I'm really having problems. I had two files open, one a psd that I'd been working on prior to the upgrade, and a jpg. I duplicated the jpg layer to the other document and part of the image disappeared. After resizing it and pressing ENTER, the image completely disappeared. This also happened when I tried to duplicate a layer from a psd file as well. I'm currently reinstalling Photoshop CC 2014 so that I can work again. PLEASE FIX!