Crash Report 5/20/16

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

Time: 5/20/16 3:29 PM
Description: There was a severe problem during mod loading that has caused the game to fail

net.minecraftforge.fml.common.LoaderException: java.lang.ExceptionInInitializerError
    at net.minecraftforge.fml.common.LoadController.transition(LoadController.java:162)
    at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:739)
    at net.minecraftforge.fml.client.FMLClientHandler.finishMinecraftLoading(FMLClientHandler.java:310)
    at net.minecraft.client.Minecraft.startGame(Minecraft.java:532)
    at net.minecraft.client.Minecraft.run(Minecraft.java:360)
    at net.minecraft.client.main.Main.main(Main.java:116)
    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 net.minecraft.launchwrapper.Launch.launch(Launch.java:135)
    at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
    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 net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:97)
    at GradleStart.main(GradleStart.java:26)
Caused by: java.lang.ExceptionInInitializerError
    at com.wither.withermod.CommonProxy.Init(CommonProxy.java:36)
    at com.wither.withermod.ClientProxy.Init(ClientProxy.java:24)
    at com.wither.withermod.Main.Init(Main.java:38)
    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 net.minecraftforge.fml.common.FMLModContainer.handleModStateEvent(FMLModContainer.java:560)
    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.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 net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:211)
    at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:189)
    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.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 net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:118)
    at net.minecraftforge.fml.common.Loader.initializeMods(Loader.java:737)
    ... 16 more
Caused by: java.lang.IllegalArgumentException: Multiple values have the same name 'null'
    at net.minecraft.block.properties.PropertyEnum.<init>(PropertyEnum.java:29)
    at net.minecraft.block.properties.PropertyEnum.create(PropertyEnum.java:75)
    at net.minecraft.block.properties.PropertyEnum.create(PropertyEnum.java:62)
    at net.minecraft.block.properties.PropertyEnum.create(PropertyEnum.java:54)
    at com.wither.withermod.blocks.WoodWall.<clinit>(WoodWall.java:21)
    ... 46 more


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

-- System Details --
Details:
    Minecraft Version: 1.8.9
    Operating System: Windows 10 (amd64) version 10.0
    Java Version: 1.8.0_91, Oracle Corporation
    Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
    Memory: 847097040 bytes (807 MB) / 1038876672 bytes (990 MB) up to 1038876672 bytes (990 MB)
    JVM Flags: 3 total; -Xincgc -Xmx1024M -Xms1024M
    IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
    FML: MCP 9.19 Powered by Forge 11.15.1.1890 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
    UCHI    mcp{9.19} [Minecraft Coder Pack] (minecraft.jar)
    UCHI    FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.8.9-11.15.1.1890-1.8.9.jar)
    UCHI    Forge{11.15.1.1890} [Minecraft Forge] (forgeSrc-1.8.9-11.15.1.1890-1.8.9.jar)
    UCHE    withermod{Build 1} [Wither's Mod] (bin)
    Loaded coremods (and transformers):
    GL info: ' Vendor: 'Intel' Version: '4.0.0 - Build 10.18.10.4276' Renderer: 'Intel(R) HD Graphics 4000'