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The game crashes every time I click on one of my worlds and i get this crash report

---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 9/19/13 6:06 PM
Description: Unexpected error

java.lang.NullPointerException
at net.minecraft.client.multiplayer.NetClientHandler.func_72519_a(NetClientHandler.java:952)
at net.minecraft.network.packet.Packet24MobSpawn.func_73279_a(SourceFile:87)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1953)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:898)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:826)
at net.minecraft.client.main.Main.main(SourceFile:101)
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:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)


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

-- Head --
Stacktrace:
at net.minecraft.client.multiplayer.NetClientHandler.func_72519_a(NetClientHandler.java:952)
at net.minecraft.network.packet.Packet24MobSpawn.func_73279_a(SourceFile:87)
at net.minecraft.network.MemoryConnection.func_74428_b(MemoryConnection.java:89)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['colto918'/322, l='MpServer', x=264.95, y=104.91, z=252.20]]
Chunk stats: MultiplayerChunkCache: 80
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (200,64,256), Chunk: (at 8,4,0 in 12,16; contains blocks 192,0,256 to 207,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 1147 game time, 1147 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: creative (ID 1). Hardcore: false. Cheats: false
Forced entities: 87 total; [EntityItem['item.tile.sapling.oak'/137, l='MpServer', x=202.13, y=70.13, z=198.88], EntityItem['item.tile.mushroom'/136, l='MpServer', x=204.13, y=13.13, z=205.19], EntityItem['item.tile.mushroom'/139, l='MpServer', x=206.88, y=12.13, z=213.16], EntityItem['item.tile.mushroom'/138, l='MpServer', x=204.13, y=12.13, z=211.13], EntityBat['Bat'/141, l='MpServer', x=197.53, y=13.84, z=216.25], EntityItem['item.tile.mushroom'/140, l='MpServer', x=207.88, y=12.13, z=212.88], EntityBat['Bat'/143, l='MpServer', x=201.53, y=21.69, z=206.84], EntityBat['Bat'/142, l='MpServer', x=195.63, y=13.94, z=221.28], EntityChicken['Chicken'/283, l='MpServer', x=330.91, y=69.00, z=202.47], EntityBat['Bat'/131, l='MpServer', x=205.69, y=19.09, z=190.47], EntityEmber['Ember24'/133, l='MpServer', x=207.50, y=71.00, z=182.50], EntityEmber['Ember24'/287, l='MpServer', x=320.50, y=70.00, z=269.50], EntityBat['Bat'/132, l='MpServer', x=205.72, y=22.44, z=197.09], EntityChicken['Chicken'/286, l='MpServer', x=325.50, y=70.00, z=211.50], EntityItem['item.item.seeds'/135, l='MpServer', x=203.41, y=70.13, z=189.00], EntityChicken['Chicken'/285, l='MpServer', x=325.50, y=70.00, z=215.50], EntityEmber['Ember24'/134, l='MpServer', x=193.97, y=69.00, z=186.47], EntityChicken['Chicken'/284, l='MpServer', x=326.50, y=70.00, z=213.50], EntityChicken['Chicken'/259, l='MpServer', x=302.50, y=71.00, z=209.50], EntityEmber['Ember24'/154, l='MpServer', x=209.50, y=71.00, z=181.50], EntityEmber['Ember24'/155, l='MpServer', x=210.50, y=71.00, z=180.50], EntityClientPlayerMP['colto918'/322, l='MpServer', x=264.95, y=104.91, z=252.20], EntityDwarf['Dwarf'/156, l='MpServer', x=220.50, y=70.00, z=189.50], EntityChicken['Chicken'/262, l='MpServer', x=300.75, y=73.00, z=269.66], EntitySkeleton['Skeleton'/157, l='MpServer', x=208.50, y=62.00, z=195.50], EntityChicken['Chicken'/260, l='MpServer', x=303.50, y=72.00, z=211.50], EntityBat['Bat'/158, l='MpServer', x=217.69, y=28.22, z=236.41], EntityChicken['Chicken'/261, l='MpServer', x=300.81, y=71.00, z=215.75], EntityChicken['Chicken'/159, l='MpServer', x=223.50, y=73.00, z=226.50], EntityBat['Bat'/144, l='MpServer', x=199.34, y=15.06, z=208.47], EntityItem['item.item.seeds'/266, l='MpServer', x=309.63, y=73.13, z=248.53], EntityBat['Bat'/145, l='MpServer', x=206.75, y=54.09, z=243.50], EntityChicken['Chicken'/267, l='MpServer', x=303.81, y=89.00, z=266.41], EntitySpider['Spider'/146, l='MpServer', x=201.88, y=43.00, z=278.19], EntitySkeleton['Skeleton'/147, l='MpServer', x=203.50, y=43.00, z=286.50], EntityChicken['Chicken'/265, l='MpServer', x=304.50, y=71.00, z=213.50], EntitySkeleton['Skeleton'/148, l='MpServer', x=204.50, y=43.00, z=286.50], EntityCreeper['Creeper'/150, l='MpServer', x=203.50, y=24.00, z=312.50], EntityChicken['Chicken'/268, l='MpServer', x=305.03, y=90.00, z=265.97], EntityChicken['Chicken'/269, l='MpServer', x=306.50, y=99.00, z=264.50], EntityDwarf['Dwarf'/171, l='MpServer', x=213.50, y=71.00, z=303.50], EntityDwarf['Dwarf'/170, l='MpServer', x=212.50, y=71.00, z=303.50], EntityBat['Bat'/169, l='MpServer', x=203.09, y=28.91, z=296.53], EntityChicken['Chicken'/168, l='MpServer', x=221.28, y=73.00, z=286.66], EntityDwarf['Dwarf'/175, l='MpServer', x=215.50, y=71.00, z=304.50], EntityDwarf['Dwarf'/174, l='MpServer', x=213.50, y=71.00, z=305.50], EntityChicken['Chicken'/173, l='MpServer', x=215.56, y=72.00, z=296.44], EntityDwarf['Dwarf'/172, l='MpServer', x=213.50, y=71.00, z=302.50], EntityDjelliotth['djelliotth'/163, l='MpServer', x=217.69, y=71.00, z=286.31], EntityDjelliotth['djelliotth'/162, l='MpServer', x=220.50, y=71.00, z=285.50], EntitySkeleton['Skeleton'/161, l='MpServer', x=208.66, y=44.00, z=284.50], EntityItem['item.tile.sapling.oak'/160, l='MpServer', x=216.88, y=77.13, z=233.56], EntityChicken['Chicken'/167, l='MpServer', x=217.09, y=72.00, z=282.47], EntityDjelliotth['djelliotth'/166, l='MpServer', x=211.41, y=71.00, z=276.16], EntityDjelliotth['djelliotth'/165, l='MpServer', x=222.09, y=71.00, z=286.31], EntityDjelliotth['djelliotth'/164, l='MpServer', x=216.31, y=71.00, z=287.69], EntitySkeleton['Skeleton'/186, l='MpServer', x=235.50, y=20.00, z=176.50], EntityMinecartChest['entity.MinecartChest.name'/288, l='MpServer', x=332.50, y=36.50, z=313.50], EntityZombie['Zombie'/289, l='MpServer', x=326.50, y=38.00, z=314.50], EntityChicken['Chicken'/187, l='MpServer', x=226.78, y=71.00, z=203.84], EntityBat['Bat'/184, l='MpServer', x=228.56, y=15.25, z=179.16], EntityZombie['Zombie'/185, l='MpServer', x=233.50, y=20.00, z=177.50], EntityChicken['Chicken'/190, l='MpServer', x=235.50, y=68.00, z=214.50], EntityChicken['Chicken'/191, l='MpServer', x=227.69, y=70.34, z=221.47], EntityChicken['Chicken'/188, l='MpServer', x=225.50, y=69.00, z=223.50], EntityChicken['Chicken'/189, l='MpServer', x=238.50, y=68.00, z=213.50], EntityItem['item.item.seeds'/178, l='MpServer', x=213.81, y=71.13, z=309.56], EntityChicken['Chicken'/176, l='MpServer', x=223.50, y=79.00, z=316.50], EntityChicken['Chicken'/177, l='MpServer', x=223.50, y=79.00, z=319.50], EntityChicken['Chicken'/205, l='MpServer', x=245.50, y=99.00, z=294.50], EntityChicken['Chicken'/204, l='MpServer', x=243.56, y=70.00, z=219.44], EntityChicken['Chicken'/207, l='MpServer', x=244.50, y=101.00, z=293.50], EntityChicken['Chicken'/206, l='MpServer', x=243.50, y=100.00, z=293.50], EntityZombie['Zombie'/201, l='MpServer', x=252.06, y=27.00, z=180.50], EntityZombie['Zombie'/200, l='MpServer', x=253.50, y=26.00, z=181.50], EntityItem['item.item.seeds'/203, l='MpServer', x=245.31, y=68.13, z=214.13], EntityZombie['Zombie'/202, l='MpServer', x=248.50, y=29.00, z=189.50], EntityOcelot['Ocelot'/193, l='MpServer', x=226.50, y=71.00, z=264.50], EntityChicken['Chicken'/192, l='MpServer', x=225.50, y=69.00, z=227.50], EntityChicken['Chicken'/195, l='MpServer', x=229.34, y=71.00, z=294.47], EntityDjelliotth['djelliotth'/194, l='MpServer', x=231.31, y=73.00, z=296.66], EntityChicken['Chicken'/222, l='MpServer', x=271.41, y=70.00, z=199.56], EntityItem['item.item.seeds'/223, l='MpServer', x=257.38, y=69.13, z=226.28], EntityChicken['Chicken'/208, l='MpServer', x=242.78, y=98.00, z=288.53], EntityChicken['Chicken'/246, l='MpServer', x=275.50, y=67.00, z=196.50], EntityChicken['Chicken'/247, l='MpServer', x=275.50, y=67.00, z=196.50], EntityChicken['Chicken'/245, l='MpServer', x=275.50, y=67.00, z=199.50]]
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:2298)
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:851)
at net.minecraft.client.main.Main.main(SourceFile:101)
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:57)
at net.minecraft.launchwrapper.Launch.main(Launch.java:18)

-- System Details --
Details:
Minecraft Version: 1.6.2
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_04, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 130303896 bytes (124 MB) / 472711168 bytes (450 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
AABB Pool Size: 10817 (605752 bytes; 0 MB) allocated, 10817 (605752 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 6, tallocated: 62
FML: MCP v8.04 FML v6.2.35.804 Minecraft Forge 9.10.0.804 39 mods loaded, 39 mods active
mcp{8.04} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{6.2.35.804} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{9.10.0.804} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Aroma1997Core{1.0.0.4} [Aroma1997Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.9.0.5} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.6.1.3} [Not Enough Items] (NotEnoughItems 1.6.1.3.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MoreExplosives{Release 3.7 for Minecraft 1.6.2} [More Explosives] (1.6.2-Forge9.10.0.804.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_ReiMinimap{v3.4_01 [1.6.2]} [mod_ReiMinimap] ([1.6.2]ReiMinimap_v3.4_01.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
IC2{1.118.401-lf} [IndustrialCraft 2] (industrialcraft-2_1.118.401-lf.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ImmibisCore{56.0.5} [Immibis Core] (immibis-core-56.0.5.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AdvancedRepulsionSystems{56.0.0} [Advanced Repulsion Systems] (adv-repulsion-systems-56.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
AdvancedMachines{56.0.0} [Advanced Machines] (advanced-machines-56.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
algaecraft{1.3.2} [AlgaeCraft] (algaecraft1.3.2_forMC1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
KeithyUtils{1.2} [Keithy Utils] (KeithyUtils_1.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Aquaculture{1.2.4} [Aquaculture] (Aquaculture_1.2.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ArchimedesShipsMod{1.6.2 v1.4.1} [Archimedes' Ships] (ArchimedesShips.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Aroma1997CoreHelper{1.0.0.4} [Aroma1997Core|Helper] (Aroma1997Core MC.1.6.2 v.1.0.0.4.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BiomesOPlenty{0.6.2} [Biomes O' Plenty] (Biomes-O-Plenty-0.6.2-1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Core{4.0.2} [BuildCraft] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Builders{4.0.2} [BC Builders] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Energy{4.0.2} [BC Energy] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Factory{4.0.2} [BC Factory] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Transport{4.0.2} [BC Transport] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
BuildCraft|Silicon{4.0.2} [BC Silicon] (buildcraft-A-4.0.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ComputerCraft{1.56} [ComputerCraft] (ComputerCraft1.56.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CCTurtle{1.56} [ComputerCraft Turtles] (ComputerCraft1.56.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Explodables{1.8} [Explodables] (Explodables.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
lantern{1.43} [Lantern mod] (Lantern1.43[1.6.2].zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
minegicka{1.4.0} [Minegicka 2] (Minegicka II 1.4.0 for MC1.6.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
necromancy{1.4b} [Necromancy] (Necromancy-1.4b-1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
rareores{1.6} [rareores] (Rareores 1.6.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
SGCraft{0.6.0} [SG Craft] (SGCraft-0.6.0-mc1.6.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
simpleores{1.0.2} [SimpleOres 2] (SimpleOres 2 & Fusion Plugin v1.0.2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
simpleoresfusion{1.0.0} [SimpleOres 2 Fusion Plugin] (SimpleOres 2 & Fusion Plugin v1.0.2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
SoulShards{1.0.39} [Soul Shards] (SoulShards-1.0.39-universal-srg.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TooMuchTNT{2.5} [TooMuchTNT] (TooMuchTNT v2.5) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
weaponmod{1.6.2 v1.13.6} [Balkon's WeaponMod] (WeaponMod.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
whynotcraft{1.6.2 - V1.1 - Universal Release + Bug Fixes!} [Why Not Craft] (whynotcraft.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
XW{1.0.1.0} [Xerxes Weapon Mod] (XerxesWeap v1.0.1.1 (1).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Launched Version: 1.6.2-Forge9.10.0.804
LWJGL: 2.9.0
OpenGL: ATI Radeon HD 4200 GL version 3.3.9836 Compatibility Profile Context, ATI Technologies 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
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

any help is appreciated

self bump