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Hi, Ive just tryed installing forge to my vanilla server on 1.4.7, I cant get it to install with the .jar, Everytime I try it gives me an error saying: "A java exception has occured" and then closes.

No logs.

(Has not been installed)

This is the first time I've tryed to use forge for my server.

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  • 3 weeks later...

The bellow info is all i have on the exception.

 

Exception in thread "main" java.lang.IncompatibleClassChangeError: Implementing

class

        at java.lang.ClassLoader.defineClass1(Native Method)

        at java.lang.ClassLoader.defineClass(ClassLoader.java:791)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:14

2)

        at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)

        at java.net.URLClassLoader.access$100(URLClassLoader.java:71)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:355)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(URLClassLoader.java:354)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:423)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:356)

        at java.lang.Class.getDeclaredMethods0(Native Method)

        at java.lang.Class.privateGetDeclaredMethods(Class.java:2442)

        at java.lang.Class.getMethod0(Class.java:2685)

        at java.lang.Class.getMethod(Class.java:1620)

        at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:492)

        at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:484)

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