Every time I try and use a preset, my Lightroom crashes. It is constantly "loading new presets" despite the fact that I got rid of all my existing presets in hopes of re-installing them and fixing this problem. I cannot edit anything. Any time I even go to the preset menu, Lightroom crashes. This all started with the new 1.4 Lightroom CC upgrade (I'm on a MAC). I absolutely need some help with this, I can't think of anything else to try.