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
>