Ubuntu 20.04 LTS. I created a Shotwell slideshow and then decided I wanted to add more pictures. I couldn't figure out how to edit the slide show so I deleted the images and xml file from the Shotwell wallpaper folder. This got rid of the slideshow but now I can't seem to create a new one as the option to "Set as Desktop slideshow..." is greyed out in the Shotwell File menu. Should I just uninstall and reinstall Shotwell? Seems like there should be a better way to handle slideshows, maybe I'm missing something?