Minecraft crashing on startup [MAC]



  • I've been having this issue with Minecraft. Every time I try to launch it, the game sends me this error message:

    Exception in thread "main" java.lang.UnsupportedClassVersionError: net/minecraft/client/main/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:637) at java.lang.ClassLoader.defineClass(ClassLoader.java:621) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

    I noticed the "unsupported" message in the first line and tried updating my system as well as installing the new Minecraft launcher. The new launcher just doesn't start up at all, so there's no way for me to start Minecraft.

    If anyone needs to know, I am running Mac OS X 10.8.

    Thanks a lot to anyone who can help me with this!



  • I've just done a little bit of testing and have eventually found a way for it to work.

    • Double click on the app and select "Show package contents"
    • Go into Contents > Resources > Java
    • Start up Bootstrap.jar. It works as the Minecraft Launcher

    Thanks to everyone who helped with this!




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