Hi,
Based on the error, the problem is related to the Adobe SaveAsAdobePDF.ppam add-in.
Try this method:
Navigate to Group Containers > UBF8T346G9.Office > User Content >Startup > PowerPoint. Drag the Acrobat add-in file SaveAsAdobePDF.ppam to the trash. Restart PowerPoint to test that the crash is gone by opening a new blank document and repeating the steps that led to the initial problem appearing.
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