KB0126: Compatibility: "Convert to an Office Open XML File Format"

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Problem

I have converted a .ppt presentation to a presentation in Office Open XML File Format (.pptx, .pptm) using the Convert function of PowerPoint 2007 or later.

After clicking on a thinkcell chart, I receive the message This element was changed without thinkcell. message: this element was changed without thinkcell.

Solution

For each chart, please select the option Manually carry over changes to thinkcell. For more details about this dialog please refer to Share presentations with users who don't have thinkcell in our manual.

To convert .ppt into .pptx presentations without encountering this problem use Save As instead of Convert.