When you Get Info (⌘-I) on one of your .pps documents, which application is displayed for the "Open with:" ? If it is Keynote, you can change it to PowerPoint and then click the "Change All…" button.
I don't have Powerpoint installed, or else FM would recognize that and open the files with it automatically. Anyone know if its possible to specifically tell FileMaker which application to use when opening a filetype?
OSX version? FMP version?
PowerPoint documents embedded or linked in FMP?
If linked where are they stored? Server? OS?