Minecraft Forums

i have installed many mods on my mc and recently i've just installed ugocraft, it launched fine at first and even went on the menu. but when i tried to get into my world, it just crashed. here is the error log:

Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Ticking screen

A full error report has been saved to /Users/Maria/Library/Application Support/minecraft/crash-reports/crash-2013-07-07_20.46.56-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT c8d22ee2 --------
Full report at:
/Users/Maria/Library/Application Support/minecraft/crash-reports/crash-2013-07-07_20.46.56-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 07/07/13 20:46

-- Head --
Stacktrace:
at net.minecraft.client.multiplayer.NetClientHandler.func_72519_a(NetClientHandler.java:929)
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.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:266)
at net.minecraft.client.gui.GuiDownloadTerrain.func_73876_c(SourceFile:31)

-- Affected screen --
Details:
Screen name: ~~ERROR~~ NullPointerException: null

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['carveros'/457, l='MpServer', x=756,67, y=73,16, z=-358,70]]
Chunk stats: MultiplayerChunkCache: 30
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-4,64,-148), Chunk: (at 12,4,12 in -1,-10; contains blocks -16,0,-160 to -1,255,-145), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 1391299 game time, 1678994 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: 123 total; [EntityItem['item.item.egg'/550, l='MpServer', x=755,00, y=98,13, z=-333,75], EntityItem['item.item.egg'/548, l='MpServer', x=767,94, y=79,13, z=-320,13], EntityChicken['Chicken'/549, l='MpServer', x=754,66, y=98,00, z=-331,66], MoCEntityFishy['Fishy'/546, l='MpServer', x=767,13, y=62,00, z=-370,41], MoCEntityRay['Ray'/547, l='MpServer', x=767,72, y=62,03, z=-368,47], MoCEntityJellyFish['JellyFish'/544, l='MpServer', x=765,47, y=62,53, z=-368,66], MoCEntityFishy['Fishy'/545, l='MpServer', x=765,13, y=61,84, z=-368,44], EntitySheep['Sheep'/567, l='MpServer', x=779,66, y=92,00, z=-385,13], EntitySheep['Sheep'/566, l='MpServer', x=782,78, y=95,00, z=-390,69], EntitySheep['Sheep'/565, l='MpServer', x=773,88, y=94,00, z=-397,69], MoCEntityShark['Shark'/575, l='MpServer', x=774,59, y=62,00, z=-369,13], MoCEntityFishy['Fishy'/574, l='MpServer', x=768,16, y=62,03, z=-375,31], MoCEntityFishy['Fishy'/573, l='MpServer', x=772,06, y=62,00, z=-368,81], MoCEntitySmallFish['SmallFish'/572, l='MpServer', x=768,13, y=62,00, z=-375,88], MoCEntityFishy['Fishy'/571, l='MpServer', x=768,66, y=62,00, z=-372,09], EntitySheep['Sheep'/570, l='MpServer', x=777,50, y=102,00, z=-389,50], EntitySheep['Sheep'/569, l='MpServer', x=775,53, y=101,00, z=-393,91], EntityChicken['Chicken'/568, l='MpServer', x=779,41, y=95,00, z=-386,31], MoCEntityCrab['Crab'/516, l='MpServer', x=740,97, y=83,00, z=-380,22], EntitySheep['Sheep'/517, l='MpServer', x=739,91, y=92,00, z=-366,47], EntityPig['Pig'/518, l='MpServer', x=744,66, y=103,00, z=-337,88], EntitySheep['Sheep'/519, l='MpServer', x=741,03, y=102,00, z=-340,94], EntityChicken['Chicken'/512, l='MpServer', x=746,41, y=82,00, z=-395,44], EntityChicken['Chicken'/513, l='MpServer', x=739,50, y=83,00, z=-394,50], EntitySheep['Sheep'/514, l='MpServer', x=737,50, y=77,00, z=-383,34], EntityPig['Pig'/515, l='MpServer', x=747,25, y=95,00, z=-381,94], EntityPig['Pig'/524, l='MpServer', x=750,59, y=100,00, z=-331,44], EntityChicken['Chicken'/520, l='MpServer', x=736,47, y=103,00, z=-346,47], EntityPig['Pig'/521, l='MpServer', x=740,47, y=84,00, z=-327,72], EntitySheep['Sheep'/522, l='MpServer', x=747,78, y=88,00, z=-320,50], EntitySheep['Sheep'/523, l='MpServer', x=745,22, y=83,00, z=-325,84], EntitySheep['Sheep'/541, l='MpServer', x=759,53, y=97,00, z=-391,81], EntityPig['Pig'/543, l='MpServer', x=759,50, y=100,00, z=-388,50], EntitySheep['Sheep'/542, l='MpServer', x=754,41, y=98,00, z=-387,88], EntitySheep['Sheep'/615, l='MpServer', x=797,50, y=74,00, z=-386,78], EntitySheep['Sheep'/618, l='MpServer', x=793,53, y=77,00, z=-388,53], EntityPig['Pig'/619, l='MpServer', x=789,47, y=79,00, z=-388,66], EntitySheep['Sheep'/616, l='MpServer', x=797,50, y=73,00, z=-385,56], EntityChicken['Chicken'/617, l='MpServer', x=789,34, y=76,00, z=-399,47], EntityItem['item.item.egg'/622, l='MpServer', x=791,56, y=72,13, z=-377,25], EntityChicken['Chicken'/623, l='MpServer', x=788,47, y=80,00, z=-383,56], EntityChicken['Chicken'/620, l='MpServer', x=790,63, y=72,00, z=-376,38], EntityChicken['Chicken'/621, l='MpServer', x=785,56, y=68,00, z=-372,38], MoCEntitySmallFish['SmallFish'/627, l='MpServer', x=790,25, y=60,00, z=-354,34], MoCEntitySmallFish['SmallFish'/626, l='MpServer', x=788,47, y=62,00, z=-359,53], EntityMinecartChest['entity.MinecartChest.name'/625, l='MpServer', x=796,50, y=22,85, z=-353,50], EntitySheep['Sheep'/624, l='MpServer', x=795,38, y=97,00, z=-371,97], EntitySheep['Sheep'/631, l='MpServer', x=790,66, y=64,00, z=-359,53], MoCEntitySmallFish['SmallFish'/630, l='MpServer', x=795,63, y=62,00, z=-352,41], MoCEntitySmallFish['SmallFish'/629, l='MpServer', x=794,66, y=62,00, z=-353,72], MoCEntitySmallFish['SmallFish'/628, l='MpServer', x=791,47, y=62,00, z=-358,53], EntityChicken['Chicken'/635, l='MpServer', x=794,47, y=62,63, z=-346,53], EntityChicken['Chicken'/634, l='MpServer', x=793,38, y=62,41, z=-351,16], EntityChicken['Chicken'/633, l='MpServer', x=796,84, y=62,50, z=-350,16], EntityPig['Pig'/632, l='MpServer', x=792,06, y=63,00, z=-341,94], MoCEntitySmallFish['SmallFish'/639, l='MpServer', x=793,91, y=62,00, z=-345,34], MoCEntitySmallFish['SmallFish'/638, l='MpServer', x=790,84, y=62,00, z=-342,25], MoCEntitySmallFish['SmallFish'/637, l='MpServer', x=786,28, y=62,00, z=-342,63], MoCEntitySmallFish['SmallFish'/636, l='MpServer', x=791,78, y=62,00, z=-342,16], MoCEntityFishy['Fishy'/576, l='MpServer', x=769,38, y=62,00, z=-370,00], MoCEntitySmallFish['SmallFish'/577, l='MpServer', x=768,09, y=62,00, z=-369,75], EntityChicken['Chicken'/578, l='MpServer', x=783,66, y=75,00, z=-380,41], MoCEntitySmallFish['SmallFish'/579, l='MpServer', x=773,53, y=62,00, z=-354,16], MoCEntitySmallFish['SmallFish'/580, l='MpServer', x=780,38, y=62,00, z=-359,44], MoCEntityFishy['Fishy'/581, l='MpServer', x=776,69, y=62,00, z=-354,88], MoCEntityDolphin['Dolphin'/582, l='MpServer', x=772,22, y=62,00, z=-365,63], MoCEntityJellyFish['JellyFish'/583, l='MpServer', x=769,38, y=62,31, z=-352,06], MoCEntityShark['Shark'/584, l='MpServer', x=773,44, y=61,03, z=-364,66], MoCEntityShark['Shark'/585, l='MpServer', x=774,53, y=62,03, z=-366,34], MoCEntityShark['Shark'/586, l='MpServer', x=772,34, y=57,34, z=-361,66], MoCEntitySmallFish['SmallFish'/587, l='MpServer', x=770,50, y=61,09, z=-353,81], MoCEntityDolphin['Dolphin'/588, l='MpServer', x=768,50, y=62,00, z=-360,38], MoCEntitySmallFish['SmallFish'/589, l='MpServer', x=769,53, y=62,00, z=-362,81], MoCEntitySmallFish['SmallFish'/590, l='MpServer', x=769,44, y=59,78, z=-367,25], MoCEntityFishy['Fishy'/591, l='MpServer', x=783,50, y=58,00, z=-352,31], EntityPig['Pig'/593, l='MpServer', x=770,47, y=63,00, z=-350,47], EntitySheep['Sheep'/592, l='MpServer', x=776,75, y=63,00, z=-347,47], EntitySheep['Sheep'/595, l='MpServer', x=775,75, y=63,00, z=-348,69], MoCEntitySmallFish['SmallFish'/594, l='MpServer', x=776,34, y=62,00, z=-350,31], MoCEntitySmallFish['SmallFish'/597, l='MpServer', x=774,69, y=62,00, z=-351,06], MoCEntitySmallFish['SmallFish'/596, l='MpServer', x=775,66, y=62,00, z=-349,16], MoCEntityMediumFish['MediumFish'/599, l='MpServer', x=783,28, y=60,00, z=-346,44], MoCEntitySmallFish['SmallFish'/598, l='MpServer', x=778,31, y=62,00, z=-349,56], EntityChicken['Chicken'/601, l='MpServer', x=781,44, y=85,00, z=-327,41], EntityChicken['Chicken'/600, l='MpServer', x=771,41, y=86,00, z=-320,66], EntityItem['item.item.egg'/602, l='MpServer', x=781,81, y=85,13, z=-326,13], EntityPig['Pig'/679, l='MpServer', x=803,19, y=98,00, z=-374,03], EntitySheep['Sheep'/678, l='MpServer', x=811,94, y=70,00, z=-371,91], EntitySheep['Sheep'/677, l='MpServer', x=812,53, y=71,00, z=-380,63], EntityStoneboard['entity.fossil.StoneBoard.name'/676, l='MpServer', x=807,94, y=74,50, z=-382,00], EntityStoneboard['entity.fossil.StoneBoard.name'/675, l='MpServer', x=801,06, y=74,00, z=-382,00], EntityStoneboard['entity.fossil.StoneBoard.name'/674, l='MpServer', x=801,06, y=73,50, z=-379,00], EntityPig['Pig'/673, l='MpServer', x=811,47, y=97,00, z=-388,53], EntityChicken['Chicken'/672, l='MpServer', x=811,34, y=84,00, z=-385,47], EntitySheep['Sheep'/645, l='MpServer', x=790,56, y=73,00, z=-332,34], EntityChicken['Chicken'/644, l='MpServer', x=799,53, y=64,00, z=-347,22], EntityChicken['Chicken'/647, l='MpServer', x=796,53, y=74,00, z=-327,63], EntityChicken['Chicken'/646, l='MpServer', x=793,47, y=73,00, z=-329,69], MoCEntitySmallFish['SmallFish'/641, l='MpServer', x=784,06, y=62,00, z=-350,16], MoCEntitySmallFish['SmallFish'/640, l='MpServer', x=790,91, y=62,03, z=-346,19], EntitySheep['Sheep'/643, l='MpServer', x=799,53, y=65,00, z=-346,47], EntityPig['Pig'/642, l='MpServer', x=796,19, y=70,00, z=-339,06], EntityStoneboard['entity.fossil.StoneBoard.name'/669, l='MpServer', x=801,06, y=73,50, z=-393,00], EntityStoneboard['entity.fossil.StoneBoard.name'/670, l='MpServer', x=801,06, y=74,00, z=-396,00], EntityStoneboard['entity.fossil.StoneBoard.name'/671, l='MpServer', x=807,94, y=74,50, z=-392,00], EntityClientPlayerMP['carveros'/457, l='MpServer', x=756,67, y=73,16, z=-358,70], EntitySheep['Sheep'/464, l='MpServer', x=764,91, y=64,00, z=-356,91], EntitySheep['Sheep'/465, l='MpServer', x=761,28, y=64,00, z=-367,69], MoCEntityFishy['Fishy'/463, l='MpServer', x=764,34, y=62,00, z=-366,44], MoCEntityFishy['Fishy'/462, l='MpServer', x=763,34, y=62,00, z=-367,88], MoCEntitySmallFish['SmallFish'/461, l='MpServer', x=763,16, y=62,00, z=-367,16], MoCEntityMediumFish['MediumFish'/460, l='MpServer', x=765,03, y=62,00, z=-359,47], MoCEntityFishy['Fishy'/459, l='MpServer', x=764,06, y=62,03, z=-367,25], MoCEntityJellyFish['JellyFish'/458, l='MpServer', x=766,50, y=62,13, z=-354,78], EntityChicken['Chicken'/511, l='MpServer', x=750,34, y=95,00, z=-384,69], EntitySheep['Sheep'/504, l='MpServer', x=731,94, y=98,00, z=-330,06], EntitySheep['Sheep'/505, l='MpServer', x=734,22, y=98,00, z=-333,72], EntityChicken['Chicken'/500, l='MpServer', x=735,53, y=88,00, z=-320,53], EntityChicken['Chicken'/501, l='MpServer', x=734,66, y=92,00, z=-325,38], EntitySheep['Sheep'/502, l='MpServer', x=730,59, y=98,00, z=-329,13], EntitySheep['Sheep'/503, l='MpServer', x=734,22, y=97,00, z=-327,59], EntityChicken['Chicken'/498, l='MpServer', x=732,50, y=100,00, z=-337,50], EntityChicken['Chicken'/499, l='MpServer', x=731,47, y=91,00, z=-320,63]]
Retry entities: 0 total; []
Stacktrace:
at net.minecraft.client.multiplayer.WorldClient.func_72914_a(WorldClient.java:441)
at net.minecraft.client.Minecraft.func_71396_d(Minecraft.java:2413)
at net.minecraft.client.Minecraft.run(Minecraft.java:775)
at java.lang.Thread.run(Thread.java:680)

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Mac OS X (i386) version 10.8.3
Java Version: 1.6.0_45, Apple Inc.
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Apple Inc.
Memory: 420652080 bytes (401 MB) / 640565248 bytes (610 MB) up to 1067057152 bytes (1017 MB)
JVM Flags: 3 total; -Xbootclasspath/a:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources/LauncherSupport.jar -Xms512M -Xmx1024M
AABB Pool Size: 4 (224 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 1, tallocated: 63
FML: MCP v7.51 FML v5.2.5.688 Minecraft Forge 7.8.0.688 Optifine OptiFine_1.5.2_HD_U_D5 33 mods loaded, 33 mods active
mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{5.2.5.688} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{7.8.0.688} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.8.6.5} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.5.2.12} [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
GuiAPI{0.15.6} [GuiAPI] (GuiAPI-0.15.6-1.5.2.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.7.0.1} [Damage Indicators] (1.5.2 DamageIndicators v2.7.0.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CustomSpawner{2.0.0} [DrZhark's CustomSpawner] (CustomMobSpawner DEV 2.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MoCreatures{5.2.3} [DrZhark's Mo'Creatures Mod] (DrZhark's Mo'Creatures Mod v5.2.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
inventorytweaks{1.54b} [Inventory Tweaks] (InventoryTweaks-1.54b.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RopesPlus{1.4.0} [Ropes+] (RopePlus_1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGInventoryMod{1.5.1 8.4} [RPG Inventory Mod] (Rpg Inventory 1.5.2 v1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGMS{RpgInv8.4} [RpgInv Mage Addon] (Rpg Inventory 1.5.2 v1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGPlusPlus{RpgInv8.4} [Subarakis RPG++ mod] (Rpg Inventory 1.5.2 v1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
RPGRB{RpgInv8.4} [Rogue and BeastMaster Patch] (Rpg Inventory 1.5.2 v1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
VanillaShields{RpgInv8.4} [Vanilla Shields Mod] (Rpg Inventory 1.5.2 v1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Shur'tugal{0.5.2} [Shur'tugal] (Shurtugal Version 0.5.3-1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Thaumcraft{3.0.5e} [Thaumcraft] (Thaumcraft3.0.5e.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ThaumicTinkerer{1.0.7} [Thaumic Tinkerer] (Thaumic Tinkerer [1.0.7]) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_UgoCraft{MC1.5.2-2.0.2} [mod_UgoCraft] (UgoCraft_Client_MC1.5.2-2.0.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
weaponmod{1.5.2 v1.12.0} [Balkon's WeaponMod] (WeaponMod.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_ReiMinimap{v3.3_06 [1.5.2]} [mod_ReiMinimap] ([1.5.2]ReiMinimap_v3.3_06.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DragonMounts{0.99.2} [Dragon Mounts Forge (WIP)] (dragonmount_v0.99.2_mc1.5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
fossil{1.5.2 0005} [Fossil/Archeology] (fossil-archeology-Build_5_PreRelease.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_core{2.1} [GrowthCraft Core] (growthcraft-core-1.5.2-2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_core_cellar{2.1} [GrowthCraft Core: Cellar] (growthcraft-core-cellar-1.5.2-2.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_apples{4.2} [GrowthCraft Apples] (growthcraft-apples-1.5.2-4.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_bamboo{1.1} [GrowthCraft Bamboo] (growthcraft-bamboo-1.5.2-1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_fishnet{4.3} [GrowthCraft Fishnet] (growthcraft-fishnet-1.5.2-4.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_flowers{5.4} [GrowthCraft Flowers] (growthcraft-flowers-1.5.2-5.4.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_grapes{5.1} [GrowthCraft Grapes] (growthcraft-grapes-1.5.2-5.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_hops{3.1} [GrowthCraft Hops] (growthcraft-hops-1.5.2-3.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
growthcraft_rice{1.1} [GrowthCraft Rice] (growthcraft-rice-1.5.2-1.1.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
LWJGL: 2.4.2
OpenGL: Intel HD Graphics 4000 OpenGL Engine GL version 2.1 INTEL-8.10.44, Intel Inc.
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Texture Pack: Sphax PureBDcraft 128x MC15
Profiler Position: N/A (disabled)
Vec3 Pool Size: 31 (1736 bytes; 0 MB) allocated, 11 (616 bytes; 0 MB) used

java.lang.ClassCastException: maocat.UgoCraft.Iod cannot be cast to net.minecraft.entity.EntityLiving
at net.minecraft.client.multiplayer.NetClientHandler.func_72519_a(NetClientHandler.java:929)
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.multiplayer.NetClientHandler.func_72551_d(NetClientHandler.java:266)
at net.minecraft.client.gui.GuiDownloadTerrain.func_73876_c(SourceFile:31)
at net.minecraft.client.Minecraft.func_71407_l(Minecraft.java:1525)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:834)
at net.minecraft.client.Minecraft.run(Minecraft.java:759)
at java.lang.Thread.run(Thread.java:680)
--- END ERROR REPORT 216a0bf ----------

i think the problem is the yellow thing i have overlined, pliz help if you can thank you ^^