I have CS6 on a PC. I have a problem where RAW images in one file are corrupted by Photoshop immediately after they are loaded in Bridge or in Photoshop. Initially the photos load normally and look like as-shot photos. But then the photos are updated with overlays of random vertical and horizontal lines of random colors. The overlays are a little translucent so you can see a little of the original image. Any ideas? When converted to JPEG formats the corrupted image is produced.