Minecraft Forums

Hello i need help with my minecraft. Im trying to get minecraft forge to work on 1.5.2 ive went into my minecraft application support folder and did the minecraft.jar.zip to get the minecraft.jar folder and i downloaded the universal 1.5.2 forge zip folder and then i copied the forge files in the minecraft.jar bin directory and selected aplly to all and whenever i launch minecraft.jar i get a error can anyone help me with this ?????? Please!!!!?????!?!!?!??!???

error msg:


Exception in thread "Thread-6" java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:676)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:317)
at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
at net.minecraft.GameUpdater.createApplet(GameUpdater.java:373)
at net.minecraft.Launcher$1.run(Launcher.java:79)

According to the error, either your minecraft.jar is not 1.5.2, or your forge files aren't. Go ahead and start with a fresh jar and make sure you have the right version of forge. Don't forget to delete the META-INF file in the minecraft.jar too!

I suggest using MultiMC http://multimc.org/ you can easily install any and all Minecraft versions and Forge with this very nicely done launcher.