[INFO] Starting minecraft server version 1.6.4
 [SEVERE] Encountered an unexpected exception NoClassDefFoundError
java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityClientPlayerMP
	at java.lang.Class.getDeclaredConstructors0(Native Method)
	at java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
	at java.lang.Class.getConstructor0(Unknown Source)
	at java.lang.Class.newInstance(Unknown Source)
	at cpw.mods.fml.common.network.NetworkModHandler.tryCreatingPacketHandler(NetworkModHandler.java:195)
	at cpw.mods.fml.common.network.NetworkModHandler.configureNetworkMod(NetworkModHandler.java:133)
	at cpw.mods.fml.common.network.NetworkModHandler.<init>(NetworkModHandler.java:102)
	at cpw.mods.fml.common.network.FMLNetworkHandler.registerNetworkMod(FMLNetworkHandler.java:263)
	at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:519)
	at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:201)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:181)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.common.eventbus.EventHandler.handleEvent(EventHandler.java:74)
	at com.google.common.eventbus.SynchronizedEventHandler.handleEvent(SynchronizedEventHandler.java:45)
	at com.google.common.eventbus.EventBus.dispatch(EventBus.java:313)
	at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:296)
	at com.google.common.eventbus.EventBus.post(EventBus.java:267)
	at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:112)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:511)
	at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:99)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:350)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:69)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:445)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:583)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.entity.EntityClientPlayerMP
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:186)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 35 more
Caused by: java.lang.NullPointerException
	at org.objectweb.asm.ClassReader.<init>(Unknown Source)
	at powercrystals.core.asm.PCCASMTransformer.transform(PCCASMTransformer.java:35)
	at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:274)
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:172)
	... 37 more