Your comments

Thanks Arthur.  I did see those posted  in other questions.  Sorry for the duplicate question.  I even have those installed. It appears it is something else.  I normally use my iPad and it (Keynote for iOS) reported that I was missing these two fonts:

KievitSlabOT and Bree EB.

I generally use Keynote and not PowerPoint as PowerPoint doesn't work well when using Airplay (usually not at all).  I have those two fonts installed that you attached, and normally everything works from my iPad.  Thought maybe they were changed as this is the first time I have seen the error.

After seeing your note I opened the file on a PC with PowerPoint and those are indeed the fonts used.  So I will have to figure out how to get Keynote to work with these fonts again.

Thanks for the help!