On the settings for the screen saver prefs, to select the source of photos, there are two places I don't understand.
If I choose Photos, from where to the photos come? And ditto, if I choose Photo Library?
iMac Line (2012 and Later)
Which system version are you running on your Mac?
In Photos 4.0 on Mojave I am seeing these options:
The Source section has three categories:
When you click Photo Library you can select the one of the photo applications you are using to manage your photos - either Aperture, iPhoto, or Photos, if you have these applications installed. If you click "Photos" in this dialog, it will show the events and albums in your system photo library.
Which system version are you running on your Mac?
In Photos 4.0 on Mojave I am seeing these options:
The Source section has three categories:
When you click Photo Library you can select the one of the photo applications you are using to manage your photos - either Aperture, iPhoto, or Photos, if you have these applications installed. If you click "Photos" in this dialog, it will show the events and albums in your system photo library.
Source of photos for screen saver
