At the present time, iScreensaver Designer 5.2 provides support for macOS 10.13 High Sierra, but there are some functional limitations.
Please read the 10.13 High Sierra Tech Note
as well as the Release Notes
Due to changes made by Apple, iScreensaver Designer version 5.2 does not currently support macOS 10.14 Mojave.
Please read our forum post
for the latest updates.
[Solved] Screensaver not running on Windows 8
We purchased this software last year and I'm trying to make a screensaver that runs on a Windows 8 machine, however, is not working. I get a white screen on the Windows machine.
Any thoughts on what do I need to do?