There is always some idiot in the audience who will yell stupid things about the issue being a PC problem or a Macintosh problem ...
Without seeing the actual PowerPoint presentation file as well as the fonts involved, a definitive diagnosis cannot be provided. Having said that, instinct would suggest that the problem is associated with cross-platform differences in characters sets used by PowerPoint and/or differences in the fonts between the platforms. This is
exactly why using PowerPoint files as opposed to a PDF file (with all fonts embedded) created from the PowerPoint file for an actual presentation is not a particularly good idea.
One of the problems is that PowerPoint on Windows and PowerPoint on Macintosh handle fonts and character sets differently. PowerPoint on Windows has used Unicode encoding for a number of years; I believe that PowerPoint 2008 on the Macintosh is the first Mac version to support Unicode, at least for new documents.
- Dov
- Dov Isaacs, former Adobe Principal Scientist (April 30, 1990 - May 30, 2021)