This is a mandatory upgrade to support macOS 11 Big Sur and macOS 12 Monterey.
iScreensaver Mac builds on Windows, Zip, and Catalina Issues
Version 6.4 relased today fixes several problems. We encourage all authors to upgrade, re-build, and re-distribute their screensaver installers.
- A Mac screensaver installer app, built on Windows, when transferred back to Mac, would fail to launch with an error message "The application 'My Screensaver Installer.app' Can Not be Opened"
- A Mac screensaver installer app that was automatically zipped (built on either Mac or Windows), and then unzipped on macOS Catalina, would give the error message "The application 'My Screensaver Installer.app' Can Not be Opened"
- A Mac screensaver installer app, built on Windows, would open and launch normally on Mac, but after installing, would fail to function. System Preferences would either crash, show an error message such as "You can't open the application 'ScreenSaverEngine' because it may be damaged or incomplete", or would show a blank Screen Savers panel, requiring a force-quit.
All of these issues are solved in version 6.4.