IF YOU ONLY LOVE THE BEACH SCREENSAVER I SUGEST YOU TO DO THIS:
1. GO TO YOUR HDD OR SSD / SYSTEM / LIBRARY / SCREEN SAVERS, AND DELETE EVERYTHING BUT THE FILE "BEACH.SLIDESAVER" (YOU CAN BACKUP THE OTHER FILES IF YOU WISH TO GET THEM BACK)
2. GO TO SYSTEM PREFERENCES / DESKTOP & SCREEN SAVER / CHOOSE KEN BURNS (FROM THE LIST OF SLIDESHOWS
3. IN THE "SOURCE" DROPDOWN MENU: CHOOSE FOLDER / HDD OR SSD / SYSTEM / LIBRARY / SCREEN SAVERS.
ENJOY.
P.S.: IT'S GOOD IF YOU WANT TO GET SOME MORE SPACE ON YOUR SSD (EVEN IF IT'S ONLY A FEW MB... AND YOU AVOID SEARCHING FOR IMAGES AND PUT THEM INTO A FOLDER...).