I have set up a few slides in Keynote 09, but I am having difficulty previewing the slides in the slideshow mode.

The video tutorial for Keynote 09 says to highlight the first slide, and then click onto Play button at the top of the menu bar. I have also set up an effect and duration time for each slide, and I have set Start Transition to "Automatically," with a delay of 0.5 seconds.

As a result, when I attempt to preview the slideshow, one of the slides in the middle of the slideshow is hightlighted, and then the process suddenly stops.

Thanks for any tips on how to correctly set up the slideshow within Keynote 09 so that the slideshow can be previewed, and ultimately played, in automatic mode.