MacOS 10.14 Mojave, screensaver problem, solved!
It happened that the StarMessage screensaver had a problem under the new Mojave MacOS version. Due to a change in the operating system's screensaver framework, StarMessage lost its ability to draw on the screen. Many other screensavers for MacOS were also affected in the same way.
Our Apple store screensaver edition, however, did not have this problem.
Today, we released v5.7.8 of our Mac screensaver that fixes the MacOS Mojave problem, so you can continue to enjoy StarMessage when you finally upgrade your Mac or MacBook to Mojave.
Please download the new Mac screensaver version to upgrade your installation.
Image copyright, Apple.