I’ve been trying some things, and here’s what I’ve found: (1) If I disable GPU acceleration, the Develop Module displays the images fine. However, the previews in Library Module don’t update to reflect this (even after quitting Lr and restarting). (2) I tried deleting the Lightroom previews associated with my library but still keeping the catalog. Then I reopened Lightroom to find a number of my images being displayed as corrupted. I try opening these files in Photoshop, and they show the same patterns of corrupt (black vertical stripes, white/magenta bottoms, etc). However, if I copy/move these images to another folder, they appear fine. In addition, if I open these files (they’re on an NAS) in Photoshop on another computer, they appear fine as well. Finally, I restore the catalog previews. Everything goes back to as it was before. Some of the “corrupted” images go back to normal while some normal images become “corrupted”. (3) I tried completely uninstalling then reinstalling Lightroom, Photoshop, and everything else Adobe. This worked… for about a day. Then everything went back to how it was. (4) I should mention that every time I’m able to get an image back to normal again (for example by reinstalling Lightroom) the next time “corruption” occurs, it’s usually with another image. The process seems random. (5) I ran Disk Utility checks on my disk. Everything appears fine. Also ran hardware diagnostic (pressing “D” during startup) and everything was fine as well. I’m running 10.12.4 on a 2016 (touchbar) MacBook Pro.
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