I've introduced a few people to pic saver. I "needed" it because I'm using Windows 2000, but I also like it because of the short picture change time. Anyway, a friend of mine stated that he thought the lock-up, or crashing behavior was related to the use of black and white photographs. I see that someone has already posted a couple of black and white photos that they were using when they had problems. I'm not sure if the program is having trouble with black and white pictures in general, or whether it's related to the transitions. I haven't removed the black and white photos from my collection and will try turning off the transitions, to see if that helps.