java.lang.NullPointerException
	at adv.a(SourceFile:82)
	at adt.<init>(SourceFile:26)
	at ads.a(SourceFile:52)
	at ads.b(SourceFile:61)
	at adv.a(SourceFile:61)
	at aey.a(SourceFile:926)
	at act.a(SourceFile:100)
	at adi.a(SourceFile:166)
	at aqz.c(SourceFile:83)
	at bhv.p(SourceFile:3783)
	at bhv.b(SourceFile:122)
	at bhd.a(SourceFile:158)
	at bho.a(SourceFile:1151)
	at bhh.a(SourceFile:817)
	at bhh.b(SourceFile:695)
	at avx.V(SourceFile:713)
	at avx.e(SourceFile:642)
	at net.minecraft.client.main.Main.main(SourceFile:103)

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 6/09/13 5:13 PM
Description: Invalid Biome id

java.lang.NullPointerException
	at adv.a(SourceFile:82)
	at adt.<init>(SourceFile:26)
	at ads.a(SourceFile:52)
	at ads.b(SourceFile:61)
	at adv.a(SourceFile:61)
	at aey.a(SourceFile:926)
	at act.a(SourceFile:100)
	at adi.a(SourceFile:166)
	at aqz.c(SourceFile:83)
	at bhv.p(SourceFile:3783)
	at bhv.b(SourceFile:122)
	at bhd.a(SourceFile:158)
	at bho.a(SourceFile:1151)
	at bhh.a(SourceFile:817)
	at bhh.b(SourceFile:695)
	at avx.V(SourceFile:713)
	at avx.e(SourceFile:642)
	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:
---------------------------------------------------------------------------------------

-- DownfallBlock --
Details:
	downfalls[] size: 256
	x: 0
	z: 0
	w: 16
	h: 16
Stacktrace:
	at adv.a(SourceFile:82)
	at adt.<init>(SourceFile:26)
	at ads.a(SourceFile:52)
	at ads.b(SourceFile:61)
	at adv.a(SourceFile:61)
	at aey.a(SourceFile:926)
	at act.a(SourceFile:100)
	at adi.a(SourceFile:166)
	at aqz.c(SourceFile:83)
	at bhv.p(SourceFile:3783)
	at bhv.b(SourceFile:122)
	at bhd.a(SourceFile:158)
	at bho.a(SourceFile:1151)
	at bhh.a(SourceFile:817)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bfg['dadhelpme'/40849, l='MpServer', x=136.60, y=82.84, z=466.60]]
	Chunk stats: MultiplayerChunkCache: 230, 230
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (144,64,252), Chunk: (at 0,4,12 in 9,15; contains blocks 144,0,240 to 159,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 1204 game time, 1204 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: 41 total; [sd['Bat'/40910, l='MpServer', x=184.13, y=28.63, z=453.91], sd['Bat'/40911, l='MpServer', x=186.03, y=28.60, z=454.44], sd['Bat'/40671, l='MpServer', x=167.03, y=32.16, z=386.84], sd['Bat'/40908, l='MpServer', x=168.47, y=25.29, z=449.47], sd['Bat'/40670, l='MpServer', x=172.43, y=43.04, z=388.32], sd['Bat'/40909, l='MpServer', x=171.72, y=25.38, z=453.41], sg['Cow'/40899, l='MpServer', x=152.50, y=69.00, z=471.50], sg['Cow'/40659, l='MpServer', x=153.64, y=69.00, z=420.28], sg['Cow'/40658, l='MpServer', x=150.50, y=68.00, z=422.50], sg['Cow'/40902, l='MpServer', x=152.72, y=64.00, z=466.16], sg['Cow'/40660, l='MpServer', x=154.71, y=69.00, z=421.50], sg['Cow'/40900, l='MpServer', x=155.59, y=64.00, z=466.81], sg['Cow'/40901, l='MpServer', x=154.09, y=64.00, z=469.53], sg['Cow'/40923, l='MpServer', x=215.53, y=63.00, z=464.53], sg['Cow'/40922, l='MpServer', x=213.97, y=63.00, z=462.34], sg['Cow'/40921, l='MpServer', x=215.53, y=63.00, z=462.47], sf['Chicken'/40920, l='MpServer', x=196.50, y=71.00, z=525.51], sg['Cow'/40655, l='MpServer', x=138.84, y=68.00, z=421.81], sr['Squid'/40640, l='MpServer', x=98.96, y=48.39, z=414.35], sf['Chicken'/40912, l='MpServer', x=184.56, y=68.00, z=517.56], sf['Chicken'/40919, l='MpServer', x=197.50, y=64.00, z=525.50], sf['Chicken'/40918, l='MpServer', x=194.50, y=64.00, z=524.50], sg['Cow'/40917, l='MpServer', x=207.03, y=64.00, z=470.94], sd['Bat'/41000, l='MpServer', x=95.31, y=19.00, z=463.69], sr['Squid'/40876, l='MpServer', x=101.50, y=55.00, z=524.86], sr['Squid'/40639, l='MpServer', x=97.68, y=47.00, z=412.51], sr['Squid'/40638, l='MpServer', x=99.31, y=47.41, z=410.68], sr['Squid'/40874, l='MpServer', x=110.47, y=57.31, z=508.54], sr['Squid'/40875, l='MpServer', x=107.55, y=58.19, z=516.04], sd['Bat'/40690, l='MpServer', x=195.23, y=21.00, z=390.21], sr['Squid'/40870, l='MpServer', x=83.47, y=60.82, z=475.87], sr['Squid'/40864, l='MpServer', x=76.96, y=58.25, z=475.81], sr['Squid'/40865, l='MpServer', x=75.82, y=57.09, z=487.05], sr['Squid'/40866, l='MpServer', x=77.17, y=57.32, z=482.18], bfg['dadhelpme'/40849, l='MpServer', x=136.60, y=82.84, z=466.60], sr['Squid'/40623, l='MpServer', x=92.76, y=47.31, z=413.05], sd['Bat'/40889, l='MpServer', x=139.91, y=33.00, z=506.44], sd['Bat'/40890, l='MpServer', x=132.50, y=34.17, z=501.47], sr['Squid'/40885, l='MpServer', x=117.32, y=57.97, z=504.48], sd['Bat'/40678, l='MpServer', x=185.18, y=42.85, z=380.88], sr['Squid'/40611, l='MpServer', x=75.16, y=60.38, z=405.87]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bfb.a(SourceFile:285)
	at avx.b(SourceFile:1813)
	at avx.e(SourceFile:651)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w36a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 217540696 bytes (207 MB) / 523304960 bytes (499 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 18940 (1060640 bytes; 1 MB) allocated, 515 (28840 bytes; 0 MB) used
	Suspicious classes: [com.ibm.icu.text.ArabicShapingException], [gnu.trove.TIntCollection], [gnu.trove.impl.HashFunctions, PrimeFinder], [gnu.trove.impl.hash.THash, TPrimitiveHash, TIntIntHash], [gnu.trove.iterator.TIterator, TAdvancingIterator, TIntIntIterator], [gnu.trove.map.TIntIntMap], [gnu.trove.map.hash.TIntIntHashMap], [gnu.trove.procedure.TIntIntProcedure], [gnu.trove.set.TIntSet]
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
	Launched Version: 13w36a
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 7670M GL version 4.2.11411 Compatibility Profile Context, ATI Technologies Inc.
	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: 5708 (319648 bytes; 0 MB) allocated, 1114 (62384 bytes; 0 MB) used