Are you referring to custom animation, or Slide Transition? Take note that
they are not the same.
For slide transition, click on the transition you want, but do NOT apply to
all slides. If you have done so, remove it by selecting No transition, then
click apply to all slides. Now, go to the slide that you want to add the
transition on, and select the transition.
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Shawn Toh (tohlz)
Microsoft Most Valuable Professional (MVP PowerPoint)
Site Updated: June 08, 2006
Added PowerPoint Movies.
http://pptheaven.mvps.org
PowerPoint Heaven - The Power to Animate