http://www.rdpslides.com/pptfaq/FAQ00236.htm should help.
--
Echo [MS PPT MVP]
"Dan Ellison" <(E-Mail Removed)> wrote in message
news:003a01c356ad$c616a690$(E-Mail Removed)...
> When I create a chart on a slide in a presentation, and
> then switch to another slide, then return to the original
> slide, I am not allowed to edit the chart again.
>
> When I double click on the chart to edit it, I get the
> following error: "The server application, source file, or
> item can't be found, or returned an unknown error. You
> may need to reinstall the server application."
>
> Questions and Comments:
> 1. It used to work properly then unexpectedly quit.
> 2. What is the server application they are suggesting to
> reinstall?
> 3. What may I have done to corrupt this feature of
> Powerpoint?
> 4. Any other suggestions?