You receive an "invalid digital certificate" error message when you try to save a PowerPoint 2003 CD presentation package to a folder on your computer

When you try to package a Microsoft Office PowerPoint 2003 presentation by using the Package for CD feature and save the files to a folder on your computer, you may receive the following error message:

This problem occurs because the PowerPoint Viewer is signed with a different digital certificate than the Microsoft Office 2003 Mso.dll file. When you use the Package for CD feature and save a copy of the packaged presentation to a folder on a Microsoft Windows 2000-based computer, this difference in digital certificates is detected and you receive the error message.

This problem is corrected in Microsoft Office 2003 Service Pack 1.
To resolve this problem, obtain the latest service pack for Microsoft Office 2003. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.