I found the transitions were one of the important details in exporting to Quicktime. First, I checked that all the transitions were uniform (followed the same “pattern”), then I looked very carefully at each transition. Some required just a few second, some longer, and the timings were not always the same in Quicktime as they were in Keynote. I exported several times to check the results before I got it right. Finally, I had to adjust *where* the timings were (before, within, at the end). Having a lot of transitions on one slide didn’t work very well, so I took all the transitions out and made individual slides out of those transitions. Bottom line: just because it turns out great in keynote doesn’t mean it’s going to work as beautifully in Quicktime! You may need to change the way you have it in keynote to make it work the same in Quicktime.