I have a program that takes an existing PPTX file and deconstructs it into one PPTX for each slide in the original PPTX. So if the original PPTX (Test.PPTX) has 3 slides I end up with three PPTX files::
Test-Slide-1.PPTX, Test-Slide-2.PPTX, Test-Slide-3.PPTX
When I open these PPTX files with PowerPoint 2010 I get this warning:
Powerpoint has found content in Test-Slide-n.PPTX that it did not understand. This content has been removed and cannot be recovered.
You should review this presentation to determine whether any content was unexpectedly changed or removed.
If I open the same file in PowerPoint 2007 I don't get the warning.
This code is already working for PPT with no issues. I rewrote it using Slides 22.214.171.124 to support PPTX. We have a mixed environment of PPT 2007 migrating to PPT 2010. How do I determine what is causing this message and get rid of it?