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] Stage.TransitionThread: timed out waiting for load of movie.mov [due to QuickTime 7.7.9]
After upgrading the QuickTime Player on Windows to the latest version, videos can no longer be played in iScreensaver Designer 22.214.171.1248. The preview screen remains empty and I get the following error after some time:
12:30 55335 3 Stage.TransitionThread: timed out waiting for load of movie.mov
The video used to play just fine, the only thing that's changed is I upgraded QuickTime Player to version 7.7.9.