You might want to provide us with more description. For instance, what do you
mean by changing? Editing a particular file or? What version of PowerPoint
are you using? Is it a trial or PowerPoint Viewer?
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Shawn Toh (tohlz)
Microsoft MVP PowerPoint
Site Updated: May 19, 2007
9 new PowerPoint Artworks http://pptheaven.mvps.org
PowerPoint Heaven - The Power to Animate
i guess the presentation you try to work with is passwordprotected so you
can't work on the presentation or copy objects from it to your hard disk or
an other presentation