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19:48:51 [SEVERE] Unexpected exception

java.lang.RuntimeException: ModLoader has failed to initialize.

        at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)

        at net.minecraft.server.ModLoader.init(ModLoader.java:715)

        at net.minecraft.server.ModLoader.Init(ModLoader.java:1357)

        at net.minecraft.server.MinecraftServer.init(MinecraftServer.java:102)

        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:411)

        at net.minecraft.server.ThreadServerApplication.run(SourceFile:465)

Caused by: java.lang.RuntimeException: Exception occured in ModLoader

        at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1292)

        at net.minecraft.server.ModLoader.ThrowException(ModLoader.java:1297)

        at net.minecraft.server.ModLoader.addMod(ModLoader.java:193)

        at net.minecraft.server.ModLoader.readFromModFolder(ModLoader.java:929)

        at net.minecraft.server.ModLoader.init(ModLoader.java:683)

        ... 4 more

Caused by: java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMachines : Unsupported major.minor version 51.0

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

        at java.lang.ClassLoader.defineClass(ClassLoader.java:634)

        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)

        at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)

        at java.net.URLClassLoader.access$000(URLClassLoader.java:73)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:212)

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

        at java.net.URLClassLoader.findClass(URLClassLoader.java:205)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:321)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:266)

        at net.minecraft.server.ModLoader.addMod(ModLoader.java:172)

        ... 6 more

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