Problem with slide lengths changing on their own
I'm working on an e-learning and have run into a strange problem: the slides are adding length to themselves. For example, the audio is 50 seconds, and the images and text are set up to enter and exit the view at specific times, some set to the end of the slide, some before. Suddenly the slide has become 1.5 minutes long, some of the timing has lengthened, the synching is off (e.g., and object that was supposed to come in on the 4th cue is suddenly coming in earlier or later in the program.
It's also very hard to change the length of the slide using the bar at the end. Sometimes I have to manually shorten all the object times before I can move the end-of-slide line back to shorten the length. And even after fixing it, I can come back later and find it has again changed.
What's going on? Is there some setting I missed, or something I did that created this nightmare (I spent HOURS last night trying to get this resolved), or is this a glitch in the software?