On my computer installed Windows8.1. Once, I tried to use the program Lightroom 5.6 the First time everything went fine. Well I have cleared some of the photos. But now, after the next boot, I found that the program has ceased to display the uploaded pictures. Instead were the dark squares. This happens in the Library and in all modes Develop, in addition to crop mode. In crop mode, the image somehow remained. I installed this program on another computer. There it works fine. Then I deleted the program from my computer completely, cleaned the computer of all files Laightroom, who found the search string, the newly-installed program on my computer. But the result was the same. All of these defects of the program remained unchanged. What can you do?
With respect, Vladimir.