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When I was playing my modded client in 1.5.2 I received an error "Rendering Tile Entity" and whenever I tried to join the world again it keeps crashing showing the same error.Please help!



--- BEGIN ERROR REPORT 90d59e6e --------
Full report at:
C:\Documents and Settings\MSI\Application Data\.minecraft\crash-reports\crash-2013-05-24_01.09.05-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 24/05/2013 1:09

-- Head --
Stacktrace:
at net.minecraft.item.ItemStack.<init>(ItemStack.java:72)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerCALogic.getAnimal(TileEntityMobSpawnerCALogic.java:108)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerCA.getAnimal(TileEntityMobSpawnerCA.java:62)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerRendererCA.renderTileEntityMobSpawner(TileEntityMobSpawnerRendererCA.java:19)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerRendererCA.func_76894_a(TileEntityMobSpawnerRendererCA.java:52)

-- Tile Entity Details --
Details:
Name: MobSpawner // naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerCA
Block type: ID #52 (tile.mobSpawner // naruto1310.craftableAnimals.vanilla.BlockMobSpawnerCA)
Block data value: 0 / 0x0 / 0b0000
Block location: World: (-24,94,480), Chunk: (at 8,5,0 in -2,30; contains blocks -32,0,480 to -17,255,495), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Actual block type: ID #52 (tile.mobSpawner // naruto1310.craftableAnimals.vanilla.BlockMobSpawnerCA)
Actual block data value: 0 / 0x0 / 0b0000
Stacktrace:
at net.minecraft.client.renderer.tileentity.TileEntityRenderer.func_76949_a(SourceFile:107)
at net.minecraft.client.renderer.tileentity.TileEntityRenderer.func_76950_a(SourceFile:99)
at net.minecraft.client.renderer.RenderGlobal.func_72713_a(RenderGlobal.java:539)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1594)

-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [EntityClientPlayerMP['FluffyTail'/392, l='MpServer', x=-45.09, y=106.62, z=488.24]]
Chunk stats: MultiplayerChunkCache: 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (-112,64,256), Chunk: (at 0,4,0 in -7,16; contains blocks -112,0,256 to -97,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 5538 game time, 5538 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: 138 total; [CubeBot['CubeBot'/267, l='MpServer', x=-43.50, y=15.00, z=448.50], EntityItem['item.tile.rail'/517, l='MpServer', x=-20.13, y=36.13, z=550.81], EntityItem['item.tile.rail'/518, l='MpServer', x=-21.19, y=36.13, z=549.03], EntityPig['Pig'/512, l='MpServer', x=-18.69, y=105.00, z=518.53], EntityMinecartChest['entity.MinecartChest.name'/513, l='MpServer', x=-19.50, y=40.50, z=532.50], EntityMinecartChest['entity.MinecartChest.name'/514, l='MpServer', x=-25.50, y=40.50, z=549.50], CubeBot['CubeBot'/524, l='MpServer', x=-12.50, y=12.00, z=467.50], EntityPig['Pig'/525, l='MpServer', x=-2.50, y=88.00, z=477.50], EntityPig['Pig'/526, l='MpServer', x=-2.50, y=86.00, z=474.50], CubeBot['CubeBot'/315, l='MpServer', x=-15.50, y=14.00, z=432.50], EntityBat['Bat'/314, l='MpServer', x=-13.09, y=21.77, z=429.87], EntityPig['Pig'/527, l='MpServer', x=-3.66, y=88.00, z=475.53], CubeBot['CubeBot'/317, l='MpServer', x=-15.50, y=14.00, z=451.50], CubeBot['CubeBot'/316, l='MpServer', x=-15.58, y=14.00, z=444.49], EntityTFNagaSegment['unknown'/774, l='MpServer', x=0.60, y=-18.48, z=0.60], EntitySheep['Sheep'/532, l='MpServer', x=-5.50, y=86.00, z=472.50], EntityTFNagaSegment['unknown'/775, l='MpServer', x=0.60, y=-18.48, z=0.60], EntityTFNagaSegment['unknown'/772, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/535, l='MpServer', x=8.50, y=11.00, z=496.50], CubeBot['CubeBot'/290, l='MpServer', x=-31.50, y=12.00, z=437.50], EntityTFNagaSegment['unknown'/773, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/534, l='MpServer', x=10.50, y=11.00, z=493.50], CubeBot['CubeBot'/291, l='MpServer', x=-31.50, y=12.00, z=437.50], EntitySheep['Sheep'/529, l='MpServer', x=-1.53, y=81.00, z=472.50], EntityTFNagaSegment['unknown'/770, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/292, l='MpServer', x=-30.75, y=12.00, z=447.31], EntityPig['Pig'/528, l='MpServer', x=-3.50, y=87.00, z=474.50], EntityTFNagaSegment['unknown'/771, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/293, l='MpServer', x=-20.59, y=14.00, z=444.59], EntitySheep['Sheep'/531, l='MpServer', x=-3.50, y=85.00, z=472.50], CubeBot['CubeBot'/294, l='MpServer', x=-18.50, y=16.00, z=432.50], EntitySheep['Sheep'/530, l='MpServer', x=-0.19, y=80.00, z=472.50], EntityTFNagaSegment['unknown'/769, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/295, l='MpServer', x=-21.50, y=16.00, z=437.34], CubeBot['CubeBot'/296, l='MpServer', x=-26.88, y=12.00, z=454.72], CubeBot['CubeBot'/541, l='MpServer', x=17.53, y=11.00, z=501.09], CubeBot['CubeBot'/297, l='MpServer', x=-18.50, y=15.00, z=448.50], EntityTFNagaSegment['unknown'/780, l='MpServer', x=0.60, y=-18.48, z=0.60], CubeBot['CubeBot'/298, l='MpServer', x=-24.64, y=12.00, z=454.10], CubeBot['CubeBot'/299, l='MpServer', x=-22.26, y=12.00, z=452.80], EntityTFNagaSegment['unknown'/778, l='MpServer', x=0.60, y=-18.48, z=0.60], EntityPig['Pig'/537, l='MpServer', x=4.05, y=78.00, z=538.08], EntityTFNagaSegment['unknown'/779, l='MpServer', x=0.60, y=-18.48, z=0.60], EntityPig['Pig'/536, l='MpServer', x=3.50, y=78.00, z=536.22], EntityTFNagaSegment['unknown'/776, l='MpServer', x=0.60, y=-18.48, z=0.60], EntityPig['Pig'/539, l='MpServer', x=3.31, y=79.00, z=540.47], EntityTFNagaSegment['unknown'/777, l='MpServer', x=0.60, y=-18.48, z=0.60], EntityPig['Pig'/538, l='MpServer', x=15.55, y=77.00, z=543.13], EntityPig['Pig'/345, l='MpServer', x=15.48, y=73.00, z=414.92], EntityPig['Pig'/332, l='MpServer', x=15.09, y=74.00, z=419.16], EntityPig['Pig'/333, l='MpServer', x=9.81, y=72.00, z=417.53], EntityPig['Pig'/331, l='MpServer', x=1.19, y=72.00, z=412.75], EntityBat['Bat'/590, l='MpServer', x=13.52, y=11.76, z=494.40], EntityBat['Bat'/593, l='MpServer', x=17.54, y=11.98, z=500.47], EntityBat['Bat'/394, l='MpServer', x=-50.39, y=20.59, z=494.58], EntityBat['Bat'/393, l='MpServer', x=-49.56, y=20.41, z=486.16], EntityClientPlayerMP['FluffyTail'/392, l='MpServer', x=-45.09, y=106.62, z=488.24], EntityItem['item.tile.rail'/147, l='MpServer', x=-106.63, y=18.13, z=427.19], EntityItem['item.tile.rail'/148, l='MpServer', x=-105.19, y=18.13, z=426.28], EntityBat['Bat'/149, l='MpServer', x=-110.43, y=39.57, z=467.13], EntitySheep['Sheep'/440, l='MpServer', x=-101.50, y=96.00, z=514.50], EntitySheep['Sheep'/441, l='MpServer', x=-96.84, y=96.00, z=516.84], EntityPig['Pig'/442, l='MpServer', x=-110.50, y=86.00, z=539.47], EntityPig['Pig'/443, l='MpServer', x=-107.46, y=86.00, z=540.67], EntityChicken['Chicken'/444, l='MpServer', x=-103.50, y=85.00, z=542.50], EntityChicken['Chicken'/445, l='MpServer', x=-102.50, y=85.00, z=543.50], EntityChicken['Chicken'/446, l='MpServer', x=-100.33, y=85.00, z=543.14], EntityPig['Pig'/447, l='MpServer', x=-111.50, y=130.00, z=539.50], EntityBat['Bat'/432, l='MpServer', x=-104.83, y=40.40, z=497.74], EntityBat['Bat'/433, l='MpServer', x=-108.66, y=38.40, z=497.27], EntityPig['Pig'/434, l='MpServer', x=-100.53, y=93.00, z=510.78], EntityPig['Pig'/435, l='MpServer', x=-96.81, y=94.00, z=513.53], EntityPig['Pig'/436, l='MpServer', x=-102.90, y=95.00, z=512.30], EntityPig['Pig'/437, l='MpServer', x=-96.87, y=93.00, z=510.28], EntitySheep['Sheep'/438, l='MpServer', x=-97.84, y=93.00, z=511.54], EntitySheep['Sheep'/439, l='MpServer', x=-104.66, y=98.00, z=523.50], EntityItem['item.tile.torch'/425, l='MpServer', x=-102.06, y=15.13, z=490.88], EntityItem['item.item.string'/424, l='MpServer', x=-103.81, y=15.13, z=488.88], EntityItem['item.tile.rail'/427, l='MpServer', x=-108.28, y=15.13, z=496.22], EntityItem['item.tile.rail'/429, l='MpServer', x=-97.81, y=16.13, z=496.66], EntityItem['item.tile.rail'/428, l='MpServer', x=-102.34, y=16.13, z=500.19], EntityMinecartChest['entity.MinecartChest.name'/431, l='MpServer', x=-96.50, y=47.50, z=508.50], EntityItem['item.tile.rail'/430, l='MpServer', x=-104.47, y=16.13, z=501.44], EntityMinecartChest['entity.MinecartChest.name'/418, l='MpServer', x=-114.50, y=42.50, z=530.50], EntityMinecartChest['entity.MinecartChest.name'/421, l='MpServer', x=-102.50, y=40.50, z=472.50], EntitySheep['Sheep'/420, l='MpServer', x=-112.81, y=88.00, z=548.19], EntityItem['item.item.string'/423, l='MpServer', x=-103.03, y=15.13, z=488.19], EntityBat['Bat'/422, l='MpServer', x=-105.28, y=46.10, z=474.75], EntityItem['item.tile.rail'/478, l='MpServer', x=-55.25, y=32.13, z=517.22], EntityItem['item.tile.rail'/479, l='MpServer', x=-53.47, y=32.13, z=512.81], EntityItem['item.tile.rail'/476, l='MpServer', x=-54.28, y=32.13, z=510.81], EntityItem['item.tile.rail'/477, l='MpServer', x=-53.56, y=32.13, z=520.41], EntityItem['item.tile.rail'/474, l='MpServer', x=-55.22, y=32.13, z=510.09], EntityItem['item.tile.rail'/475, l='MpServer', x=-55.72, y=32.13, z=511.25], EntityItem['item.tile.rail'/472, l='MpServer', x=-61.19, y=9.13, z=464.13], EntityItem['item.tile.torch'/473, l='MpServer', x=-52.38, y=39.13, z=495.78], EntityBat['Bat'/197, l='MpServer', x=-86.38, y=18.10, z=418.25], EntityBat['Bat'/196, l='MpServer', x=-93.75, y=18.10, z=427.50], EntityItem['item.tile.rail'/471, l='MpServer', x=-57.88, y=10.13, z=469.75], EntityItem['item.tile.rail'/464, l='MpServer', x=-77.22, y=47.13, z=550.69], EntityBat['Bat'/194, l='MpServer', x=-87.59, y=18.23, z=406.88], EntityMinecartChest['entity.MinecartChest.name'/465, l='MpServer', x=-78.50, y=45.50, z=562.50], EntityItem['item.tile.torch'/463, l='MpServer', x=-79.44, y=47.13, z=542.88], EntityItem['item.tile.torch'/462, l='MpServer', x=-69.72, y=37.13, z=509.31], EntityItem['item.tile.torch'/461, l='MpServer', x=-74.09, y=39.13, z=481.75], EntityBat['Bat'/460, l='MpServer', x=-76.88, y=10.26, z=468.41], EntityBat['Bat'/459, l='MpServer', x=-75.78, y=9.75, z=465.73], EntityBat['Bat'/458, l='MpServer', x=-84.34, y=46.88, z=545.01], EntityItem['item.tile.torch'/457, l='MpServer', x=-92.06, y=42.13, z=539.63], EntityItem['item.tile.torch'/456, l='MpServer', x=-93.88, y=47.13, z=519.41], EntityItem['item.tile.torch'/455, l='MpServer', x=-82.97, y=36.13, z=523.09], EntityItem['item.tile.mushroom'/454, l='MpServer', x=-94.59, y=116.13, z=506.53], EntityPig['Pig'/453, l='MpServer', x=-107.38, y=87.00, z=548.50], EntityChicken['Chicken'/452, l='MpServer', x=-100.50, y=85.00, z=544.50], EntitySheep['Sheep'/451, l='MpServer', x=-110.69, y=88.00, z=545.50], EntitySheep['Sheep'/450, l='MpServer', x=-110.47, y=88.00, z=546.59], EntitySheep['Sheep'/449, l='MpServer', x=-107.50, y=88.00, z=549.81], EntityPig['Pig'/508, l='MpServer', x=-22.78, y=93.00, z=485.53], EntityPig['Pig'/509, l='MpServer', x=-18.50, y=92.00, z=508.50], EntityPig['Pig'/510, l='MpServer', x=-18.50, y=92.00, z=508.50], EntityPig['Pig'/511, l='MpServer', x=-17.50, y=91.00, z=507.50], EntityPig['Pig'/505, l='MpServer', x=-28.50, y=90.00, z=486.50], EntityPig['Pig'/506, l='MpServer', x=-29.53, y=94.00, z=483.72], EntityPig['Pig'/507, l='MpServer', x=-24.09, y=93.00, z=485.47], EntityItem['item.tile.torch'/228, l='MpServer', x=-71.06, y=13.13, z=459.34], EntityItem['item.tile.torch'/227, l='MpServer', x=-71.06, y=13.13, z=462.72], EntityPig['Pig'/493, l='MpServer', x=-46.57, y=107.00, z=520.85], EntityPig['Pig'/492, l='MpServer', x=-46.53, y=107.00, z=522.97], EntityMinecartChest['entity.MinecartChest.name'/495, l='MpServer', x=-34.50, y=36.34, z=565.50], EntityMinecartChest['entity.MinecartChest.name'/494, l='MpServer', x=-35.50, y=36.50, z=532.50], EntityPig['Pig'/491, l='MpServer', x=-45.03, y=107.00, z=524.63], EntityPig['Pig'/490, l='MpServer', x=-46.53, y=107.00, z=524.78], EntityMinecartChest['entity.MinecartChest.name'/484, l='MpServer', x=-52.50, y=36.50, z=565.50], EntityItem['item.tile.flower'/244, l='MpServer', x=-63.63, y=114.13, z=427.75], EntityMinecartChest['entity.MinecartChest.name'/245, l='MpServer', x=-49.50, y=15.50, z=448.50], EntityItem['item.tile.torch'/481, l='MpServer', x=-55.84, y=32.13, z=540.84], EntityItem['item.tile.flower'/243, l='MpServer', x=-61.88, y=112.13, z=429.13], EntityMinecartChest['entity.MinecartChest.name'/48
0, l='MpServer', x=-55.50, y=40.50, z=526.50]]
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:2414)
at net.minecraft.client.Minecraft.run(Minecraft.java:776)
at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
Minecraft Version: 1.5.2
Operating System: Windows XP (x86) version 5.1
Java Version: 1.7.0_21, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 191283608 bytes (182 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -Xms512m -Xmx512m
AABB Pool Size: 5983 (335048 bytes; 0 MB) allocated, 1506 (84336 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 v5.2.12.710 Minecraft Forge 7.8.0.710 Optifine OptiFine_1.5.2_HD_D3 25 mods loaded, 25 mods active
mcp{7.44} [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
FML{5.2.12.710} [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Forge{7.8.0.710} [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CodeChickenCore{0.8.6.8} [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
NotEnoughItems{1.5.2.15} [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
mod_bspkrsCore{v2.04(1.5.2)} [bspkrsCore] ([1.5.2]bspkrsCorev2.04.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Familiars_API{1.5.1} [Familiars API] (Familiars_API_1.5.2a.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TreeCapitator{Forge 1.5.2.r01} [TreeCapitator] ([1.5.2]TreeCapitator.Forge.1.5.2.r01.Uni.CoreMod.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
DamageIndicatorsMod{2.7.0} [Damage Indicators] (1.5.2 DamageIndicators v2.7.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
craftableAnimals{2.2.1} [Craftable Animals] ([1.5.2]CraftableAnimals v2.2.1.jar) 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
mod_AnimalBikes{1.0} [mod_AnimalBikes] (AnimalBikes_Modloader_1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Backpack{1.8.11} [Backpack] (backpack-1.8.11-1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CreeperGauntlet{1.0.0} [Creeper Gauntlet] (CreeperGauntlet_1.0.0.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
CubeBots{1.4.3} [CubeBots] (CubeBots 1.4.3.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
ExtrabiomesXL{3.13.1} [ExtrabiomesXL] (ExtrabiomesXL-universal-1.5.2-3.13.1.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Familiars_DefaultMobPack{1.5.2} [DefaultMobPack] (Familiars_DefaultMobPack_1.5.2c.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Familiars_ExtendedFamPack{1.5.1} [ExtendedFamPack] (Familiars_ExtendedFamPack_1.5.2a(2).zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Familiars_Herobrine_FamPack{1.5.2} [HerobrineFamPack] (Familiars_HerobrineFamPack_1.5.2b.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Magical-Crops{2.1.0} [Magical Crops - Version 2!] (magical_crops_1.5.1.2.1.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
MutantCreatures{1.3.4} [Mutant Creatures] (Mutant Creatures v1.3.4 mc1.5.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
pitman-87_TF2_Teleporter{1.5.1} [TF2 Teleporter] (TF2_Teleporter_1.5.2a.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Thaumcraft{3.0.5c} [Thaumcraft] (Thaumcraft3.0.5c.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
TwilightForest{1.18.0} [The Twilight Forest] (twilightforest-1.18.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
Wandcraft{v1.0.0} [Wandcraft Mod] (Wandcraft V1.0.0.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available->Available
LWJGL: 2.4.2
OpenGL: Intel Bear Lake B GL version 1.4.0 - Build 7.15.10.5009, Intel
Is Modded: Definitely; Client brand changed to 'fml,forge'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: 861 (48216 bytes; 0 MB) allocated, 222 (12432 bytes; 0 MB) used

java.lang.NullPointerException
at net.minecraft.item.ItemStack.<init>(ItemStack.java:72)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerCALogic.getAnimal(TileEntityMobSpawnerCALogic.java:108)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerCA.getAnimal(TileEntityMobSpawnerCA.java:62)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerRendererCA.renderTileEntityMobSpawner(TileEntityMobSpawnerRendererCA.java:19)
at naruto1310.craftableAnimals.vanilla.TileEntityMobSpawnerRendererCA.func_76894_a(TileEntityMobSpawnerRendererCA.java:52)
at net.minecraft.client.renderer.tileentity.TileEntityRenderer.func_76949_a(SourceFile:107)
at net.minecraft.client.renderer.tileentity.TileEntityRenderer.func_76950_a(SourceFile:99)
at net.minecraft.client.renderer.RenderGlobal.func_72713_a(RenderGlobal.java:539)
at net.minecraft.client.renderer.EntityRenderer.func_78471_a(EntityRenderer.java:1594)
at net.minecraft.client.renderer.EntityRenderer.func_78480_b(EntityRenderer.java:1121)
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:871)
at net.minecraft.client.Minecraft.run(Minecraft.java:760)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT d3468800 ----------

I'm getting the same thing. I think it's a glitched block. I tried removing it through MCEdit but it didn't work. If I'm not near it, though, my game won't crash.