We have updated our instrutions for code-siging and notarizing your built iScreensavers for macOS. There is now a command-line script you can run from the Terminal which will do all the hard work for you.
Check it out here: https://iscreensaver.com/help/notes/code_signing/code_signing.shtml#option2
The script has been updated to version 1334, which provides better compatbiility with signing on Catalina and Big Sur, and also has better error messages when a problem occurs.
The script has been updated to version 1368, which has major changes, as the older altool has been deprecated. The new script uses the more modern notarytool and is more user friendly.
Check out the new version here: iScreensaver : Code-signing, Notarization, Gatekeeper and Authenticode
