Thanks for posting this, think I'm starting to finally get some leads on why the macOS version is being so difficult...
Going to try out a few things over the weekend to see if I can get it launching more reliably.
Since it looks like you at least have a version of Java installed on your machine, see if running this from the Terminal works...
> java -XstartOnFirstThread -jar desktop-1.0.jar
(Assuming that you have the Terminal navigated to the same folder as the jar file)
There might also still be an issue where I'm using a AWT/Swing popup to show crash error messages... but worth trying.