asia69

I got the issue sorted The problem was I had both a JDK and a JRE My JAVA_HOME system variable was set to the path of the JDK, and not the JRE After changing it everything works as it should Problem sorted.

hello, I'm trying to start a RAD modpack server and when starting the launchserver.bat option, I get this error: E:\Downloads\RAD-Serverpack-1.28>java -Xms2048m -Xmx4096m -XX:PermSize=256m -jar E:\Downloads\RAD-Serverpack-1.28\forge-1.12.2-14.23.5.2831-universal.jar nogui Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option PermSize; support was removed in 8.0 A problem occurred running the Server launcher.java.lang.reflect.InvocationTargetException at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:567) at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:70) at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:34) Caused by: java.lang.ClassCastException: class jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to class java.net.URLClassLoader (jdk.internal.loader.ClassLoaders$AppClassLoader and java.net.URLClassLoader are in module java.base of loader 'bootstrap') at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34) at net.minecraft.launchwrapper.Launch.main(Launch.java:28) ... 6 more E:\Downloads\RAD-Serverpack-1.28>pause Press any key to continue . . . This is what I see when I type "java -version": java version "12.0.2" 2019-07-16 Java(TM) SE Runtime Environment (build 12.0.2+10) Java HotSpot(TM) 64-Bit Server VM (build 12.0.2+10, mixed mode, sharing) I've seen multiple posts, similar to mine, but most oftenly they resort the issue by going back to Java 8 Well, because of the new license Java 8 is now Java 12.0.1/2 I'm not sure what to do and if there is any other info I can provide to help someone resort the issue, I'll be glad to help.