Hopper: java.lang.NullPointerException

java.lang.NullPointerException
	at azf.a(SourceFile:73)
	at bbd.a(SourceFile:155)

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 9/12/13 7:39 AM
Description: Rendering screen

java.lang.NullPointerException
	at azf.a(SourceFile:73)
	at bbd.a(SourceFile:155)
	at bhx.b(SourceFile:720)
	at awl.V(SourceFile:717)
	at awl.e(SourceFile:646)
	at net.minecraft.client.main.Main.main(SourceFile:103)


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

-- Head --
Stacktrace:
	at azf.a(SourceFile:73)
	at bbd.a(SourceFile:155)

-- Screen render details --
Details:
	Screen name: bbd
	Mouse location: Scaled: (172, 75). Absolute: (689, 749)
	Screen size: Scaled: (420, 263). Absolute: (1680, 1050). Scale factor of 4

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfw['Bear6611'/205, l='MpServer', x=696.65, y=65.62, z=-633.93]]
	Chunk stats: MultiplayerChunkCache: 225, 225
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (690,4,-505), Chunk: (at 2,0,7 in 43,-32; contains blocks 688,0,-512 to 703,255,-497), Region: (1,-1; contains chunks 32,-32 to 63,-1, blocks 512,0,-512 to 1023,255,-1)
	Level time: 51414 game time, 51414 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: 146 total; [ue['Creeper'/19, l='MpServer', x=622.50, y=27.00, z=-612.50], uv['Zombie'/20, l='MpServer', x=625.31, y=27.00, z=-610.09], uq['Skeleton'/23, l='MpServer', x=622.50, y=37.00, z=-585.50], uq['Skeleton'/24, l='MpServer', x=623.50, y=37.00, z=-583.50], tt['entity.MinecartChest.name'/31, l='MpServer', x=624.50, y=29.50, z=-650.50], uv['Zombie'/34, l='MpServer', x=628.50, y=27.00, z=-621.44], uv['Zombie'/35, l='MpServer', x=629.44, y=27.00, z=-623.44], uq['Skeleton'/32, l='MpServer', x=624.50, y=28.00, z=-633.50], uv['Zombie'/33, l='MpServer', x=629.72, y=26.00, z=-627.03], uv['Zombie'/38, l='MpServer', x=626.88, y=35.00, z=-586.66], ue['Creeper'/39, l='MpServer', x=634.69, y=35.00, z=-584.59], ue['Creeper'/36, l='MpServer', x=624.47, y=27.00, z=-610.91], ue['Creeper'/37, l='MpServer', x=624.50, y=27.00, z=-613.50], uq['Skeleton'/42, l='MpServer', x=624.50, y=37.00, z=-580.50], tt['entity.MinecartChest.name'/43, l='MpServer', x=637.47, y=36.34, z=-565.84], ue['Creeper'/40, l='MpServer', x=634.25, y=35.00, z=-588.13], ue['Creeper'/41, l='MpServer', x=637.22, y=35.00, z=-582.56], sl['Bat'/47, l='MpServer', x=640.66, y=28.10, z=-634.88], uq['Skeleton'/44, l='MpServer', x=630.06, y=35.00, z=-572.53], uq['Skeleton'/50, l='MpServer', x=641.95, y=38.00, z=-594.35], tt['entity.MinecartChest.name'/49, l='MpServer', x=641.50, y=38.50, z=-593.50], tt['entity.MinecartChest.name'/48, l='MpServer', x=640.50, y=27.50, z=-613.91], us['Spider'/55, l='MpServer', x=671.50, y=32.00, z=-588.50], tt['entity.MinecartChest.name'/54, l='MpServer', x=665.50, y=33.50, z=-613.53], uq['Skeleton'/53, l='MpServer', x=655.50, y=40.00, z=-554.50], ue['Creeper'/59, l='MpServer', x=683.00, y=33.00, z=-618.38], tt['entity.MinecartChest.name'/58, l='MpServer', x=682.50, y=33.50, z=-616.50], ue['Creeper'/63, l='MpServer', x=699.50, y=12.00, z=-657.50], tr['item.item.arrow'/60, l='MpServer', x=672.09, y=64.13, z=-584.50], tr['item.tile.sandStone.default'/68, l='MpServer', x=699.88, y=19.13, z=-635.63], tr['item.tile.sandStone.default'/69, l='MpServer', x=692.25, y=28.13, z=-635.16], tr['item.tile.sandStone.default'/70, l='MpServer', x=694.13, y=31.13, z=-638.31], tr['item.tile.sandStone.default'/71, l='MpServer', x=692.13, y=31.13, z=-636.31], sl['Bat'/64, l='MpServer', x=699.53, y=7.10, z=-669.06], uq['Skeleton'/65, l='MpServer', x=701.47, y=7.00, z=-668.06], uv['Zombie'/66, l='MpServer', x=703.31, y=14.00, z=-641.97], uv['Zombie'/67, l='MpServer', x=703.47, y=14.00, z=-640.78], tr['item.tile.sandStone.default'/76, l='MpServer', x=699.13, y=28.13, z=-638.88], tr['item.tile.sandStone.default'/77, l='MpServer', x=694.50, y=22.13, z=-636.88], tr['item.tile.sandStone.default'/78, l='MpServer', x=699.88, y=24.13, z=-637.03], tr['item.tile.sandStone.default'/79, l='MpServer', x=694.22, y=25.13, z=-637.88], tr['item.tile.sandStone.default'/72, l='MpServer', x=692.13, y=26.13, z=-633.13], tr['item.tile.sandStone.default'/73, l='MpServer', x=693.13, y=29.13, z=-637.66], tr['item.tile.sandStone.default'/74, l='MpServer', x=692.13, y=28.13, z=-632.13], tr['item.tile.sandStone.default'/75, l='MpServer', x=693.44, y=22.13, z=-630.13], tr['item.tile.sandStone.default'/85, l='MpServer', x=694.97, y=27.13, z=-638.88], tr['item.tile.sandStone.default'/84, l='MpServer', x=696.13, y=27.13, z=-638.81], tr['item.tile.sandStone.default'/87, l='MpServer', x=697.13, y=23.13, z=-628.13], tr['item.tile.sandStone.default'/86, l='MpServer', x=697.66, y=27.13, z=-638.66], tr['item.tile.sandStone.default'/81, l='MpServer', x=698.88, y=27.13, z=-638.25], tr['item.tile.sandStone.default'/80, l='MpServer', x=701.50, y=21.13, z=-634.41], tr['item.tile.sandStone.default'/83, l='MpServer', x=700.88, y=20.13, z=-635.56], tr['item.tile.sandStone.default'/82, l='MpServer', x=694.13, y=22.13, z=-629.13], tr['item.tile.sandStone.default'/93, l='MpServer', x=698.75, y=18.13, z=-634.22], tr['item.tile.sandStone.default'/92, l='MpServer', x=698.13, y=18.13, z=-631.53], tr['item.tile.sandStone.default'/95, l='MpServer', x=697.13, y=25.13, z=-627.13], tr['item.tile.sandStone.default'/94, l='MpServer', x=700.88, y=24.13, z=-628.59], tr['item.tile.sandStone.default'/89, l='MpServer', x=694.13, y=26.13, z=-628.84], tr['item.tile.sandStone.default'/88, l='MpServer', x=701.38, y=23.13, z=-635.44], tr['item.tile.sandStone.default'/91, l='MpServer', x=693.13, y=25.13, z=-629.50], tr['item.tile.sandStone.default'/90, l='MpServer', x=701.88, y=23.13, z=-629.13], tr['item.tile.sandStone.default'/102, l='MpServer', x=693.13, y=21.13, z=-633.13], tr['item.tile.sandStone.default'/103, l='MpServer', x=701.19, y=21.13, z=-630.13], tr['item.tile.sandStone.default'/100, l='MpServer', x=698.91, y=19.13, z=-631.06], tr['item.tile.sandStone.default'/101, l='MpServer', x=696.88, y=20.13, z=-635.97], tr['item.tile.sandStone.default'/98, l='MpServer', x=700.13, y=24.13, z=-628.53], tr['item.tile.sandStone.default'/99, l='MpServer', x=697.56, y=20.13, z=-629.13], tr['item.tile.sandStone.default'/96, l='MpServer', x=701.88, y=21.13, z=-631.06], tr['item.tile.sandStone.default'/97, l='MpServer', x=695.78, y=22.13, z=-628.63], tr['item.tile.sandStone.default'/110, l='MpServer', x=695.75, y=20.13, z=-635.63], tr['item.tile.sandStone.default'/111, l='MpServer', x=700.66, y=20.13, z=-630.28], tr['item.tile.sandStone.default'/108, l='MpServer', x=699.19, y=19.13, z=-634.50], tr['item.tile.sandStone.default'/109, l='MpServer', x=700.22, y=19.13, z=-631.13], tr['item.tile.sandStone.default'/106, l='MpServer', x=698.19, y=19.13, z=-633.47], tr['item.tile.sandStone.default'/107, l='MpServer', x=702.88, y=23.13, z=-630.50], tr['item.tile.sandStone.default'/104, l='MpServer', x=700.19, y=19.13, z=-632.50], tr['item.tile.sandStone.default'/105, l='MpServer', x=697.94, y=19.13, z=-635.88], sl['Bat'/119, l='MpServer', x=698.16, y=19.92, z=-632.50], va['Villager'/118, l='MpServer', x=696.44, y=20.00, z=-636.06], tr['item.tile.sandStone.default'/117, l='MpServer', x=701.41, y=21.13, z=-632.81], tr['item.tile.sandStone.default'/116, l='MpServer', x=695.97, y=20.13, z=-630.13], tr['item.tile.sandStone.default'/115, l='MpServer', x=697.97, y=18.13, z=-634.13], tr['item.tile.sandStone.default'/114, l='MpServer', x=695.06, y=22.13, z=-635.16], tr['item.tile.sandStone.default'/113, l='MpServer', x=694.44, y=20.13, z=-631.22], tr['item.tile.sandStone.default'/112, l='MpServer', x=693.13, y=23.13, z=-635.88], uv['Zombie'/127, l='MpServer', x=692.25, y=33.00, z=-626.06], tr['item.tile.sandStone.default'/126, l='MpServer', x=694.13, y=32.13, z=-629.34], tr['item.tile.sandStone.default'/125, l='MpServer', x=696.56, y=34.13, z=-638.16], ue['Creeper'/124, l='MpServer', x=690.84, y=33.00, z=-628.22], uv['Zombie'/123, l='MpServer', x=690.31, y=33.00, z=-639.00], uq['Skeleton'/122, l='MpServer', x=693.98, y=23.00, z=-635.26], sl['Bat'/121, l='MpServer', x=696.50, y=26.32, z=-632.47], sl['Bat'/120, l='MpServer', x=698.59, y=23.98, z=-629.44], uq['Skeleton'/137, l='MpServer', x=716.50, y=14.00, z=-669.03], us['Spider'/136, l='MpServer', x=718.00, y=14.00, z=-674.50], sl['Bat'/139, l='MpServer', x=715.13, y=15.10, z=-655.56], uq['Skeleton'/138, l='MpServer', x=716.50, y=14.00, z=-670.06], uf['Enderman'/141, l='MpServer', x=711.69, y=14.00, z=-649.31], ue['Creeper'/140, l='MpServer', x=716.00, y=14.00, z=-654.56], uq['Skeleton'/143, l='MpServer', x=710.50, y=14.00, z=-651.50], uq['Skeleton'/142, l='MpServer', x=719.91, y=14.00, z=-650.94], va['Villager'/129, l='MpServer', x=696.44, y=64.00, z=-634.88], ue['Creeper'/128, l='MpServer', x=692.50, y=33.00, z=-629.50], uv['Zombie'/131, l='MpServer', x=694.34, y=33.00, z=-616.66], sl['Bat'/130, l='MpServer', x=692.81, y=34.00, z=-615.75], ue['Creeper'/133, l='MpServer', x=694.50, y=33.00, z=-617.50], uq['Skeleton'/132, l='MpServer', x=691.53, y=33.00, z=-611.03], uq['Skeleton'/135, l='MpServer', x=716.31, y=14.00, z=-674.50], tt['entity.MinecartChest.name'/134, l='MpServer', x=690.50, y=32.50, z=-589.50], sl['Bat'/152, l='MpServer', x=716.53, y=14.10, z=-635.97], sl['Bat'/153, l='MpServer', x=719.25, y=14.10, z=-639.47], tr['item.item.bone'/154, l='MpServer', x=711.84, y=64.13, z=-608.22], uq['Skeleton'/155, l='MpServer', x=701.08, y=32.00, z=-587.93], tt['entity.MinecartChest.name'/157, l='MpServer', x=734.50, y=14.50, z=-645.53], sl['Bat'/158, l='MpServer', x=727.13, y=15.10, z=-651.75], uq['Skeleton'/159, l='MpServer', x=728.88, y=14.00, z=-643.72], sl['Bat'/144, l='MpServer', x=710.13, y=14.10, z=-653.59], sl['Bat'/145, l='MpServer', x=713.25, y=14.64, z=-643.31], ue['Creeper'/146, l='MpServer', x=707.50, y=14.00, z=-644.50], sl['Bat'/147, l='MpServer', x=714.91, y=14.05, z=-641.38], ox['Experience Orb'/148, l='MpServer', x=706.53, y=64.25, z=-645.81], ox['Experience Orb'/149, l='MpServer', x=708.63, y=64.25, z=-646.22], ox['Experience Orb'/150, l='MpServer', x=711.91, y=64.25, z=-644.28], uv['Zombie'/151, l='MpServer', x=705.50, y=11.00, z=-637.80], uv['Zombie'/171, l='MpServer', x=748.78, y=14.00, z=-622.75], uv['Zombie'/170, l='MpServer', x=750.56, y=14.00, z=-621.03], ue['Creeper'/169, l='MpServer', x=742.50, y=14.00, z=-643.50], uv['Zombie'/168, l='MpServer', x=750.50, y=14.00, z=-667.50], uq['Skeleton'/175, l='MpServer', x=761.50, y=11.00, z=-667.50], tt['entity.MinecartChest.name'/174, l='MpServer', x=759.50, y=15.50, z=-688.50], tr['item.item.rottenFlesh'/172, l='MpServer', x=737.59, y=64.13, z=-597.84], tr['item.item.rottenFlesh'/163, l='MpServer', x=726.88, y=64.13, z=-574.25], sl['Bat'/162, l='MpServer', x=735.56, y=13.67, z=-656.03], sl['Bat'/161, l='MpServer', x=720.59, y=15.10, z=-653.88], sl['Bat'/160, l='MpServer', x=731.00, y=15.10, z=-655.16], uv['Zombie'/167, l='MpServer', x=748.50, y=14.00, z=-667.50], tt['entity.MinecartChest.name'/166, l='MpServer', x=750.50, y=14.50, z=-669.50], tt['entity.MinecartChest.name'/165, l='MpServer', x=741.50, y=15.50, z=-660.50], uq['Skeleton'/164, l='MpServer', x=736.50, y=9.00, z=-695.50], tt['entity.MinecartChest.name'/178, l='MpServer', x=752.50, y=11.50, z=-633.50], uv['Zombie'/179, l='MpServer', x=756.50, y=14.00, z=-622.50], ue['Creeper'/176, l='MpServer', x=756.50, y=11.00, z=-663.50], ue['Creeper'/177, l='MpServer', x=755.50, y=11.00, z=-667.50], uv['Zombie'/180, l='MpServer', x=756.13, y=13.00, z=-616.38], uq['Skeleton'/229, l='MpServer', x=770.94, y=17.00, z=-704.41], bfw['Bear6611'/205, l='MpServer', x=696.65, y=65.62, z=-633.93]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bfr.a(SourceFile:285)
	at awl.b(SourceFile:1821)
	at awl.e(SourceFile:655)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w37a
	Operating System: Windows Vista (x86) version 6.0
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 158127048 bytes (150 MB) / 387624960 bytes (369 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
	AABB Pool Size: 7955 (445480 bytes; 0 MB) allocated, 3 (168 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 13w37a
	LWJGL: 2.9.0
	OpenGL: GeForce 8600 GTS/PCI/SSE2 GL version 2.1.1, NVIDIA Corporation
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: English (US)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 960 (53760 bytes; 0 MB) allocated, 38 (2128 bytes; 0 MB) used