Java exception

[SergeantGrit]

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.

[HMPerson1]

How to install

[SpikierSpy]

Im trying to get this to work on MC 1.5.1, iv followed the EAQ and when i run the ruesulting .jar file it gives me the same message: "A Java Exception Has Occurred". Can anyone help?

[SpikierSpy]

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)

[LexManos]

One or more of your mods is not for the version of minecraft you're running.