"Application aborted." Error declaring custom system classloader via JVM options

[robert-esl]

An error is preventing me from using WinRun4j.

I am hoping to use Winrun4j to package an application, to prevent the user from modifying the command-line. The application also uses a custom system classloader, specified by the JVM's -Djava.system.class.loader argument (as documented at ClassLoader.getSystemClassloader() ).

However, when I run the following test application with a custom system classloader, I get an error in the log: [err] Application aborted. (after the splash screen appears briefly). I get no System.out messages from the application, which then exits.

The application runs fine through the IDE, and if I don't overwrite the system classloader myself, I do appear to get the JVM's classloader, and all expected output.

Can you please suggest any reason for the crash, or any way I can get further information?

I am using coretto-11.0.18 64-bit.

My entire application is as follows (2 class files, packaged into a JAR).

public class Main {
    public static void main(String[] args) {
        System.out.println("Hello, World");
    }
}

public class MyClassLoader extends ClassLoader {
    private transient boolean recurse;
    public MyClassLoader(ClassLoader parent) {
        super(parent);
    }
    @Override
    protected synchronized Class<?> loadClass(String name, boolean resolve) throws ClassNotFoundException {
        if (!recurse) {
            System.out.println("Loading: " + name);
        }
        try{
            recurse = true;
            return super.loadClass(name, resolve);
        } finally {
            recurse = false;
        }
    }
}

My .ini file (added to the .exe)

main.class=Main
vmarg.1=-Djava.system.class.loader=MyClassLoader
vm.location=C:\Users\rober\.jdks\corretto-11.0.18\bin\server\jvm.dll
vm.version.min=1.11
splash.image=splashscreen_newest.gif
ini.override=false # don't allow classloader overrides
args.allow.vmargs=false # don't allow vm argument overrides
log=winrun4jtest.log
log.overwrite=true

winrun4jtest.log