After installing the latest security update on 9-25-20, my screensavers will not load. I'm running Mojave on a late-2013 27" iMac. When selecting the screensaver(s) in the System Preferences pane, the pane screen goes blank. I've restarted three times in safe mode and also reset the PRAM. Still no results.
iMac 27″, macOS 10.14
This looks to be a big issue, and is affecting many screensavers built using Swift.
The issue is being tracked in a few places:
I thought I was going mad, all of my third party screen savers now not working after the recent security update. I've had to uninstall them all. Hopefully a fix will loom from Apple.
FYI, the fix for Mojave 10.14 came out about 5 days ago: https://macintouch.com/post/8670/macos-mojave-10-14-6-supplemental-update-bug-fixes/
My screensavers will not load after installing the latest security update on 9-25-20.
