Probably the path length is too long. Try creating a test folder in C:\.
Move the ppt file and movie into the test folder.
Then, open ppt file and re-insert the movie. Does it work this time round?
Also, some troubleshooting here to tackle movie problem:
http://www.echosvoice.com/tshoot_video2.htm
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Site Updated: January 28, 2006
Chinese New Year Update: New Animation Template added.
http://www.pptheaven.xs3.com
PowerPoint Heaven - The Power to Animate
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