Please let us know if you encounter any issues.
"Flash plugin not installed" and screensavers not working
Flash-based screensavers generated with iScreensaver Designer 5 seem to have stopped working on macOS computers. I've tested it myself on macOS Mojave. During installation there's a message saying "Flash plugin is not installed. Flash plugin version 27.0.0 is recommended. Update the Flash plugin?" even though version 32 is installed.
When running the screensaver there's just a black screen with a similar message stating the Flash plugin needs to be updated.
Is there any hope for these Flash-based screensavers, now that you've completely dropped SWF support in v6?