Can't edit Org Chart, Graph, Excel (error msg: "server application, source
file, or item can't be found")
http://www.rdpslides.com/pptfaq/FAQ00236.htm

Here is the info that I was provided that resolved the issue. Sorry they
didn't have a KB #

SYMPTOMS

If you create stand-alone Microsoft Organization Chart 2.0 (*.opx) files in
versions of Microsoft Office that are earlier than Microsoft Office 2003, you
cannot insert these Organization Chart files into Microsoft Office PowerPoint
2003. If you try to edit an Organization Chart object that was created in an
earlier version of Office, you may receive the following error message:

The Microsoft Organizational Chart server aplication can't be found. Contact
your system administrator to install this server application.

CAUSE

This issue occurs because Office 2003 includes a new version of Organization
Chart. The new version of Organization Chart is built into the diagramming
feature in Office 2003, and not a separate tool like Organization Chart 2.0.
The new version of Organization Chart cannot edit existing Organization Chart
2.0 objects or import stand-alone .opx files that are created in earlier
versions of Organization Chart.

WORKAROUND

To work around this issue, download and install the earlier version of the
Organization Chart 2.0 utility. After the Microsoft Organization Chart 2.0 is
installed, you can use the utility to import stand-alone .opx files by using
the Insert Object command.

Here is the link to the download.
http://download.microsoft.com/download/d/0/9/d09f6e71-d39c-41df-8dcf-89f655266ce
e/msoc2.exe