Hi everyone! I've been uploading RAW files to edit on Lightroom version 3.3, and on two occasions, the program has frozen after I've finished toning a photo and then deleted all the edits I made. When I noticed the program freezing and the rolling ball of death appeared, I went to the photo grid where my other imported images are shown, but the one I was previously editing was not visible and instead was a black screen. I can't do anything on the program unless I force quit and when I open it back up again, the edits I made aren't recoverable. I would appreciate any help I can get solving this problem, thanks!