I have a PowerPoint presentation that has movies in it. When I play the slide
show, I get the error message "Microsoft office PowerPoint has stopped
working...." at certain point. If I play the slide show very slow, the
problem may not show up. If I remove the movies, it works fine. Does anyone
know what is wrong with it? It seems this only happens in Windows Vista. I
tried the same presentation on a Windows XP computer, it works fine.

Thank you very much for any help!