Lately when using this program I have downloaded photos from my digital camera, reviewed them in some detail, and when I press a "back" button or some other button to go to another screen in the program, the photos just "evaporate". Occasionally I can find them under some other file name completely unrelated. Most recently I could not find them at all despite spending hours reviewing all the old photo files, searching for info. on the net and using Recuva. I do not use MacAfee. These are work photos that are very difficult to replace. How do I avoid this problem in the future, and is there a way I have not discovered to find these photos. The only info. on them I have is the date I took and downloaded them.  Thank you.  Bill