Slide show doesn't show in OBS

[CoachMichael]

Newbie here. All help is welcome. Last night all worked fine. This morning my PP slideshow doesn't appear in OBS. Just a black screen. All other scenes work fine. Somebody any solutions or idea how to fix?

 

[TigerMO]

Are you wanting to do a macOS Screen Capture? In Properties, do you have the Method set to Application Capture and Powerpoint selected as the Application?