No, I tried starting another slide show from scratch with only a couple of slides and I have the same results. As soon as I click on the animation tab, the tab disappears and the program locks up. All the other shows work fine, the demo as well. I downloaded the 5.6.3 and it is still occurring.I feel that I must have changed a setting somewhere although for the life of me I don't know where or what. Very frustrating Brian