I'm going nuts here - my project played as I wanted it to. I made a few corrections to some drag and drop slides and now several of the slides are not doing what I want them to do. IN TWO DIFFERENT PROJECTS!!! I've obviously done something but I can't figure it out. There are slides in both projects that are fully functional. This only happened with 2-3 slides per project. When I preview the project, I can hear the audio but I can't see the material on the slide. Does anyone have any suggestions?