Try saving the presentation first before running in slideshow mode to see the
flash. After viewing the flash, you may not be able to view it again. So one
possible way is to save before viewing slideshow. After viewing, do not save
the ppt file. Instead, exit without saving and re-open to continue editing
from there. See if it helps.
There's also a similar post here, where it has been suggested that you can
use PFCMedia or FlashBack (you can initialize Flashback to rewind and play
the movie).
For me, installing the latest version of Macromedia Flash Player 8.0 seems
to work too.
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Site Updated: December 04, 2005
http://www.pptheaven.xs3.com
PowerPoint Heaven - The Power to Animate
Contains tutorials on creating amazing animations for your PowerPoint
Presentations.
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