Mod server with my mod not working

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Mod server with my mod not working

Hello, I want to make a server with my mod, but the server crashes. Please help!

 

---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 4-7-15 16:03
Description: Exception in server tick loop

cpw.mods.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityClientPlayerMP
    at cpw.mods.fml.common.LoadController.transition(LoadController.java:163)
    at cpw.mods.fml.common.Loader.loadMods(Loader.java:544)
    at cpw.mods.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:87)
    at cpw.mods.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:314)
    at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:117)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:387)
    at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/entity/EntityClientPlayerMP
    at mod.mcreator.mcreator_ghostOre.<clinit>(mcreator_ghostOre.java:118)
    at mod.mcreator.MarijnUpgrade.<init>(MarijnUpgrade.java:111)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at java.lang.Class.newInstance(Class.java:379)
    at cpw.mods.fml.common.ILanguageAdapter$JavaAdapter.getNewInstance(ILanguageAdapter.java:173)
    at cpw.mods.fml.common.FMLModContainer.constructMod(FMLModContainer.java:506)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
    at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
    at com.google.common.eventbus.EventBus.post(EventBus.java:275)
    at cpw.mods.fml.common.LoadController.sendEventToModContainer(LoadController.java:212)
    at cpw.mods.fml.common.LoadController.propogateStateMessage(LoadController.java:190)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at com.google.common.eventbus.EventSubscriber.handleEvent(EventSubscriber.java:74)
    at com.google.common.eventbus.SynchronizedEventSubscriber.handleEvent(SynchronizedEventSubscriber.java:47)
    at com.google.common.eventbus.EventBus.dispatch(EventBus.java:322)
    at com.google.common.eventbus.EventBus.dispatchQueuedEvents(EventBus.java:304)
    at com.google.common.eventbus.EventBus.post(EventBus.java:275)
    at cpw.mods.fml.common.LoadController.distributeStateMessage(LoadController.java:119)
    at cpw.mods.fml.common.Loader.loadMods(Loader.java:513)
    ... 5 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.client.entity.EntityClientPlayerMP
    at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 36 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: 1.7.10
    Operating System: Mac OS X (x86_64) version 10.10.3
    Java Version: 1.7.0_79, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 179998400 bytes (171 MB) / 272105472 bytes (259 MB) up to 954728448 bytes (910 MB)
    JVM Flags: 0 total;
    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 v9.05 FML v7.10.99.99 Minecraft Forge 10.13.4.1472 4 mods loaded, 4 mods active
    States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
    UC    mcp{9.05} [Minecraft Coder Pack] (minecraft.jar)
    UC    FML{7.10.99.99} [Forge Mod Loader] (forge-1.7.10-10.13.4.1472-1.7.10-universal.jar)
    UC    Forge{10.13.4.1472} [Minecraft Forge] (forge-1.7.10-10.13.4.1472-1.7.10-universal.jar)
    UE    MarijnUpgrade{1.0.0} [MarijnUpgrade] (Marijn's Upgrade mod.zip)
    Profiler Position: N/A (disabled)
    Is Modded: Definitely; Server brand changed to 'fml,forge'
    Type: Dedicated Server (map_server.txt)