I use Box Sync and am wondering if it is the cause of this error I get when using PPT for Mac. When I "Save As" for a copy, that file is corrupt and cannot be opened. Powerpoint tries to fix it but then says: Sorry, PowerPoint can't read ^0.
The only way I can get my content back is to open it with Keynote and then export to a PPT file again (some design content is lost in translation). This has happened 5 times to me over a period of a few months.
Question
PPT Mac: File Was Changed Externally error message
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