Every year at Christmas I switch my screensaver to one called "Snowfall"...it has a red background with giant snowflakes falling. I recently upgraded to Mojave from Sierra and it stopped working. It says "You cannot use Snowfall Screensaver with this version of MacOS. Please contact the vendor to get a newer version of the screen saver." However, I think the vendor gave up on it because on the website, it says 'it doesn't work with Lion." Does anyone know of a fix for it? It seems to be mostly Quartz based.