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Hi guys I have been trying to install some mods and everything was going perfectly until I tried to start a world.
I created the world, it said: converting world... building terrain... as soon as it was about to create, it said shutting down internal server. I then got a crash report saying this:

Pleas help me!


Description: Unexpected error

java.lang.NoSuchMethodError: net.minecraft.client.entity.EntityClientPlayerMP.addChatMessage(Ljava/lang/String;)V
at codechicken.core.CCUpdateChecker.tick(CCUpdateChecker.java:81)
at codechicken.core.internal.ClientTickHandler.tickEnd(ClientTickHandler.java:27)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostClientTick(FMLCommonHandler.java:367)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1970)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:910)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:838)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)


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

-- Head --
Stacktrace:
at codechicken.core.CCUpdateChecker.tick(CCUpdateChecker.java:81)
at codechicken.core.internal.ClientTickHandler.tickEnd(ClientTickHandler.java:27)
at cpw.mods.fml.common.SingleIntervalHandler.tickEnd(SingleIntervalHandler.java:34)
at cpw.mods.fml.common.FMLCommonHandler.tickEnd(FMLCommonHandler.java:141)
at cpw.mods.fml.common.FMLCommonHandler.onPostClientTick(FMLCommonHandler.java:367)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [GCCorePlayerSP['NitroPhobia'/485, l='MpServer', x=-333.50, y=75.62, z=145.50]]
Chunk stats: MultiplayerChunkCache: 75
Level seed: 0
Level generator: ID 04 - BIOMESOP, ver 0. Features enabled: false
Level generator options:
Level spawn location: World: (-329,64,139), Chunk: (at 7,4,11 in -21,8; contains blocks -336,0,128 to -321,255,143), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 19 game time, 19 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 37 total; [EntityCow['Cow'/137, l='MpServer', x=-390.91, y=70.00, z=200.03], EntityCow['Cow'/136, l='MpServer', x=-391.09, y=70.00, z=202.09], EntityZombie['Zombie'/958, l='MpServer', x=-392.50, y=45.00, z=92.50], EntityCow['Cow'/139, l='MpServer', x=-388.84, y=70.00, z=199.97], EntityZombie['Zombie'/959, l='MpServer', x=-393.50, y=45.00, z=92.50], EntityCow['Cow'/138, l='MpServer', x=-388.97, y=70.00, z=201.81], EntityBat['Bat'/816, l='MpServer', x=-365.31, y=42.13, z=94.41], EntityBat['Bat'/615, l='MpServer', x=-311.50, y=11.28, z=101.50], EntityItem['item.item.seeds'/142, l='MpServer', x=-377.75, y=62.75, z=95.19], EntityBat['Bat'/613, l='MpServer', x=-310.00, y=11.16, z=102.25], EntityBat['Bat'/616, l='MpServer', x=-310.34, y=11.09, z=101.31], EntityItem['item.item.seeds'/135, l='MpServer', x=-383.13, y=61.75, z=93.44], EntityCreeper['Creeper'/943, l='MpServer', x=-355.50, y=36.00, z=90.50], EntityCow['Cow'/154, l='MpServer', x=-342.50, y=69.00, z=117.50], EntitySkeleton['Skeleton'/806, l='MpServer', x=-356.50, y=37.00, z=124.50], EntityCow['Cow'/155, l='MpServer', x=-340.50, y=69.00, z=116.50], EntityCreeper['Creeper'/807, l='MpServer', x=-349.50, y=37.00, z=120.50], EntityCreeper['Creeper'/698, l='MpServer', x=-380.50, y=56.00, z=80.50], EntityCow['Cow'/156, l='MpServer', x=-339.50, y=69.00, z=119.50], EntityCow['Cow'/157, l='MpServer', x=-342.50, y=68.00, z=115.50], EntityItem['item.tile.bop.stoneFormations.stalactite'/936, l='MpServer', x=-304.66, y=31.81, z=102.81], EntityEnderman['Enderman'/999, l='MpServer', x=-372.50, y=49.00, z=86.50], EntityItem['item.tile.bop.stoneFormations.stalagmite'/171, l='MpServer', x=-280.47, y=35.53, z=140.84], EntityBat['Bat'/504, l='MpServer', x=-257.63, y=13.00, z=169.22], EntityCow['Cow'/163, l='MpServer', x=-318.50, y=71.00, z=174.47], EntityCow['Cow'/162, l='MpServer', x=-318.50, y=70.00, z=175.69], EntityBat['Bat'/503, l='MpServer', x=-258.44, y=13.28, z=171.56], EntityCow['Cow'/165, l='MpServer', x=-315.50, y=70.00, z=179.50], GCCorePlayerSP['NitroPhobia'/485, l='MpServer', x=-333.50, y=75.62, z=145.50], EntityCow['Cow'/164, l='MpServer', x=-317.50, y=70.00, z=177.50], EntitySkeleton['Skeleton'/593, l='MpServer', x=-389.50, y=23.00, z=198.50], EntityZombie['Zombie'/592, l='MpServer', x=-388.50, y=23.00, z=196.50], EntitySkeleton['Skeleton'/594, l='MpServer', x=-387.50, y=23.00, z=200.38], EntitySquid['Squid'/541, l='MpServer', x=-341.50, y=62.00, z=191.50], EntitySquid['Squid'/540, l='MpServer', x=-342.50, y=62.00, z=194.50], EntitySquid['Squid'/539, l='MpServer', x=-343.50, y=62.00, z=191.50], EntitySquid['Squid'/538, l='MpServer', x=-348.50, y=62.00, z=188.50]]
Retry entities: 0 total; []
Server brand: fml,forge
Server type: Integrated singleplayer server
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:440)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2312)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:863)
at net.minecraft.client.main.Main.main(SourceFile:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

-- System Details --
Details:
Minecraft Version: 1.6.4
Operating System: Mac OS X (x86_64) version 10.9.1
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 193409616 bytes (184 MB) / 475889664 bytes (453 MB) up to 1065025536 bytes (1015 MB)
JVM Flags: 1 total; -Xmx1G
AABB Pool Size: 32449 (1817144 bytes; 1 MB) allocated, 32449 (1817144 bytes; 1 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 4, tallocated: 58
FML: MCP v8.11 FML v6.4.49.965 Minecraft Forge 9.11.1.965 37 mods loaded, 37 mods active
mcp{8.09} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.4.49.965} [Forge Mod Loader] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.11.1.965} [Minecraft Forge] (minecraftforge-9.11.1.965.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Aroma1997Core{1.0.1.5} [Aroma1997Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.9.0.8} [CodeChicken Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Micdoodlecore{} [Micdoodle8 Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AppliedEnergistics-Core{rv13.c} [AppliedEnergistics Core] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.9.2.3} [Damage Indicators] (1.6.4 DamageIndicatorsv2.9.2.3 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
arsmagica2{1.1.2b} [Ars Magica 2] (AM2_1.1.2b (3).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AppliedEnergistics{rv13.c} [Applied Energistics] (appeng-rv13-c-mc162 (3).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ArchimedesShipsMod{1.6.4 v1.4.5} [Archimedes' Ships] (ArchimedesShips (2).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Aroma1997CoreHelper{1.0.1.5} [Aroma1997Core|Helper] (Aroma1997Core MC.1.6.4 v.1.0.1.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiblioCraft{1.5.4} [BiblioCraft] (BiblioCraft[v1.5.4] (2).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiomesOPlenty{1.2.1} [Biomes O' Plenty] (BiomesOPlenty-universal-1.6.4-1.2.1.418.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Core{4.2.2} [BuildCraft] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Builders{4.2.2} [BC Builders] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Energy{4.2.2} [BC Energy] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Factory{4.2.2} [BC Factory] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Transport{4.2.2} [BC Transport] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Silicon{4.2.2} [BC Silicon] (buildcraft-A-1.6.4-4.2.2 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IC2{1.118.401-lf} [IndustrialCraft 2] (industrialcraft-2_1.118.401-lf (3).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CompactWindmills{1.0.3.0} [CompactWindmills] (CompactWindmills MC.1.6.4 v.1.0.3.0 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ComputerCraft{1.58} [ComputerCraft] (ComputerCraft1.58 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CCTurtle{1.58} [ComputerCraft Turtles] (ComputerCraft1.58 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DeathCounter{2.0.0} [DeathCounter] (Death-Counter-Mod-1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DragonMounts{r34} [Dragon Mounts] (dragonmount_r34_mc1.6.x.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
EnderStorage{1.4.3.6} [EnderStorage] (EnderStorage 1.4.3.6.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ExtraUtilities{1.0.3a} [Extra Utilities] (extrautils-1.0.3a (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
factorization{0.8.25} [Factorization] (Factorization-0.8.25.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
factorization.misc{0.8.25} [Factorization Miscellaneous Nonsense] (Factorization-0.8.25.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
factorization.notify{0.8.25} [Factorization Notification System] (Factorization-0.8.25.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
factorization.dimensionalSlice{0.8.25} [Factorization Dimensional Slices] (Factorization-0.8.25.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forestry{2.3.0.5} [Forestry for Minecraft] (ForestryMod1.6.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GalacticraftCore{2.0.11} [Galacticraft Core] (Galacticraft-1.6.4-2.0.11.978 (1).jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
iChunUtil{2.4.0} [iChunUtil] (util^iChunUtil2.4.0 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GraviGun{2.0.0} [GraviGun] (GravityGunMod1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
PortalGun{2.0.2} [PortalGun] (PortalGun2.0.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.6.4-Forge9.11.1.965
LWJGL: 2.9.0
OpenGL: Intel HD Graphics 3000 OpenGL Engine GL version 2.1 INTEL-8.18.28, Intel Inc.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Resource Pack: Default
Current Language: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used