What to do if the installer is created with install4j but the installer cannot be started successfully. If you just execute it, it will drop without any error, so you do not know the cause.
Start the install4j launcher with the environment variable ʻINSTALL4J_LOG = yes`.
(abridgement) <JAVA_HOME>/lib/ext exists, extensions mechanism no longer supported; Use -classpath instead. .Error: Could not create the Java Virtual Machine. Error: A fatal exception has occurred. Program will exit.
I was able to get the error message. This is where the long debugging journey begins.