MC 1.7.2 - BiomesOPlenty - Server Crash on Builds after 630

---- Minecraft Crash Report ----
// Sorry :(

Time: 1/30/14 3:23 PM
Description: Exception in server tick loop

java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityClientPlayerMP
	at biomesoplenty.BiomesOPlenty.<clinit>(BiomesOPlenty.java:47)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:443)
	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:47)
	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.sendEventToModContainer(LoadController.java:209)
	at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:188)
	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:47)
	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:119)
	at cpw.mods.fml.common.Loader.loadMods(Loader.java:487)
	at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:76)
	at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:294)
	at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:114)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:412)
	at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:705)
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.entity.EntityClientPlayerMP
	at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:188)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	... 31 more
Caused by: java.lang.NullPointerException


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_51, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 952884800 bytes (908 MB) / 1029701632 bytes (982 MB) up to 1029701632 bytes (982 MB)
	JVM Flags: 2 total; -Xmx1024M -Xms1024M
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	FML: MCP v9.01-pre FML v7.2.109.1019 Minecraft Forge 10.12.0.1019 9 mods loaded, 9 mods active
	mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed
	FML{7.2.109.1019} [Forge Mod Loader] (forge-1.7.2-10.12.0.1019-universal.jar) Unloaded->Constructed
	Forge{10.12.0.1019} [Minecraft Forge] (forge-1.7.2-10.12.0.1019-universal.jar) Unloaded->Constructed
	bspkrsCore{6.0(1.7.2)} [bspkrsCore] ([0000]-bspkrsCore_6.0_MC172.jar) Unloaded->Constructed
	BattleTowers{1.4.4} [Battle Towers] (BattleTowers_1.4.4_MC172.jar) Unloaded->Constructed
	BiomesOPlenty{2.0.0} [Biomes O' Plenty] (BiomesOPlenty_2.0.0.670_MC172.jar) Unloaded
	AS_Ruins{12.1} [Ruins Spawning System] (Ruins_12.1_MC172.jar) Unloaded
	TreeCapitator{1.7.2.r01} [TreeCapitator] (TreeCapitator_1.7.2.r01_MC172.jar) Unloaded
	AS_UpdateCheck{1.1.4} [AtomicStryker Update Check Mod] (UpdateCheckerMod_1.1.4_MC172.jar) Unloaded
	Profiler Position: N/A (disabled)
	Is Modded: Definitely; Server brand changed to 'fml,forge'
	Type: Dedicated Server (map_server.txt)