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I've got an error on MCPC+152 server.

Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
	at cpw.mods.fml.common.LoadController.transition(LoadController.java:142)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:691)
	at cpw.mods.fml.server.FMLServerHandler.finishServerLoading(FMLServerHandler.java:93)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStarted(FMLCommonHandler.java:355)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:172)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:652)
	at net.minecraft.server.ThreadMinecraftServer.run(SourceFile:573)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient
	at net.minecraftforge.client.MinecraftForgeClient.getStencilBits(MinecraftForgeClient.java:64)
	at net.minecraftforge.client.MinecraftForgeClient.<clinit>(MinecraftForgeClient.java:68)
	at noppes.npcs.items.ItemNpcInterface.<init>(ItemNpcInterface.java:20)
	at noppes.npcs.items.ItemMusic.<init>(ItemMusic.java:11)
	at noppes.npcs.items.ItemBanjo.<init>(ItemBanjo.java:8)
	at noppes.npcs.CustomItems.load(CustomItems.java:145)
	at noppes.npcs.CustomNpcs.load(CustomNpcs.java:139)
	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 cpw.mods.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:494)
	at sun.reflect.GeneratedMethodAccessor1.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:314)
	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.propogateStateMessage(LoadController.java:165)
	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:314)
	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:98)
	at cpw.mods.fml.common.Loader.initializeMods(Loader.java:690)
	... 5 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:273)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 37 more
Caused by: java.lang.Error: java.lang.RuntimeException: Attempted to load class bds for invalid side SERVER
	at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:397)
	at cpw.mods.fml.relauncher.RelaunchClassLoader.findClass(RelaunchClassLoader.java:260)
	... 39 more
Caused by: java.lang.RuntimeException: Attempted to load class bds for invalid side SERVER
	at cpw.mods.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:50)
	at cpw.mods.fml.relauncher.RelaunchClassLoader.runTransformers(RelaunchClassLoader.java:389)
	... 40 more

I’m using latest MCPC+, forge version is minecraftforge-universal-1.5.2-7.8.0.710.
Please help.

Hey guy, texture is missing in V283, plz fix it.

One suggestion, please change saving EXP points instead of saving level.
Because of this...


Or may break the balance of game.

Nice! Enderdragon become more challenging now!
But my MCPC+ Server(mcpc-plus-1.5.1-R0.3-SNAPSHOT-f656-349) crashed while fighting.

before crashing, it throw lots of " moved too quickly!"
like this: http://paste.ideaslabs.com/show/YQlIsC2oT

Then it crashed.
http://paste.ideaslabs.com/show/1cPlxyd2aA

How to deal with it?