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java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[?:1.8.0_101] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[?:1.8.0_101] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_101] at java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_101] at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.Launch.main(Launch.java:28)[launchwrapper-1.12.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[?:1.8.0_101] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[?:1.8.0_101] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_101] at java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_101] at cpw.mods.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:43)[custom.jar:?] at cpw.mods.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12)[custom.jar:?]Caused by: java.lang.NoClassDefFoundError: net/minecraft/block/BlockOldLeaf at net.minecraft.block.Block.func_149671_p(Block.java:222)[aji.class:?] at net.minecraft.init.Bootstrap.func_151354_b(SourceFile:355)[kl.class:?] at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1260)[MinecraftServer.class:?] ... 12 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.block.BlockOldLeaf at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_101] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_101] ... 15 moreCaused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: net.minecraft.block.BlockLeaves at com.google.common.base.Throwables.propagate(Throwables.java:160)[guava-17.0.jar:?] at cofh.asm.CoFHAccessTransformer.transform(CoFHAccessTransformer.java:94)[CoFHCore-%5B1.7.10%5D3.1.3-327.jar:?] at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)[launchwrapper-1.12.jar:?] ... 17 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.block.BlockLeaves at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_101] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_101] at java.lang.Class.forName0(Native Method)[?:1.8.0_101] at java.lang.Class.forName(Class.java:348)[?:1.8.0_101] at cofh.asm.CoFHAccessTransformer.transform(CoFHAccessTransformer.java:90)[CoFHCore-%5B1.7.10%5D3.1.3-327.jar:?] ... 19 moreCaused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: net.minecraft.block.BlockLeavesBase at com.google.common.base.Throwables.propagate(Throwables.java:160)[guava-17.0.jar:?] at cofh.asm.CoFHAccessTransformer.transform(CoFHAccessTransformer.java:94)[CoFHCore-%5B1.7.10%5D3.1.3-327.jar:?] at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)[launchwrapper-1.12.jar:?] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)[launchwrapper-1.12.jar:?] ... 24 moreCaused by: java.lang.ClassNotFoundException: net.minecraft.block.BlockLeavesBase at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)[launchwrapper-1.12.jar:?] at java.lang.ClassLoader.loadClass(ClassLoader.java:424)[?:1.8.0_101] at java.lang.ClassLoader.loadClass(ClassLoader.java:357)[?:1.8.0_101] at java.lang.Class.forName0(Native Method)[?:1.8.0_101] at java.lang.Class.forName(Class.java:348)[?:1.8.0_101] at cofh.asm.CoFHAccessTransformer.transform(CoFHAccessTransformer.java:90)[CoFHCore-%5B1.7.10%5D3.1.3-327.jar:?] ... 26 moreCaused by: java.lang.ClassFormatError: Duplicate method name&signature in class file net/minecraft/block/BlockLeavesBase at java.lang.ClassLoader.defineClass1(Native Method)[?:1.8.0_101] at java.lang.ClassLoader.defineClass(ClassLoader.java:763)[?:1.8.0_101] at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)[?:1.8.0_101] at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:182)[launchwrapper-1.12.jar:?] ... 31 more