---- Minecraft Crash Report ----
// My bad.

Time: 5/09/13 18:23
Description: Ticking entity

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at adu.a(SourceFile:121)
	at adu.a(SourceFile:26)
	at ado.a(SourceFile:350)
	at agb.a(SourceFile:433)
	at kc.a(SourceFile:156)
	at aey.a(SourceFile:774)
	at kc.c(SourceFile:93)
	at kc.d(SourceFile:104)
	at act.e(SourceFile:297)
	at adi.<init>(SourceFile:32)
	at act.a(SourceFile:2241)
	at ru.a(SourceFile:79)
	at ru.a(SourceFile:83)
	at rb.c(SourceFile:41)
	at qi.a(SourceFile:91)
	at ov.bk(SourceFile:410)
	at ou.d(SourceFile:1307)
	at ov.d(SourceFile:292)
	at ud.d(SourceFile:24)
	at un.d(SourceFile:155)
	at ou.o_(SourceFile:1194)
	at ov.o_(SourceFile:169)
	at ud.o_(SourceFile:29)
	at un.o_(SourceFile:211)
	at act.a(SourceFile:1351)
	at kd.a(SourceFile:479)
	at act.g(SourceFile:1329)
	at act.h(SourceFile:1236)
	at kd.h(SourceFile:364)
	at net.minecraft.server.MinecraftServer.t(SourceFile:463)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bng.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hs.run(SourceFile:575)


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

-- Head --
Stacktrace:
	at java.util.Random.nextInt(Unknown Source)
	at adu.a(SourceFile:121)
	at adu.a(SourceFile:26)
	at ado.a(SourceFile:350)
	at agb.a(SourceFile:433)
	at kc.a(SourceFile:156)
	at aey.a(SourceFile:774)
	at kc.c(SourceFile:93)
	at kc.d(SourceFile:104)
	at act.e(SourceFile:297)
	at adi.<init>(SourceFile:32)
	at act.a(SourceFile:2241)
	at ru.a(SourceFile:79)
	at ru.a(SourceFile:83)
	at rb.c(SourceFile:41)
	at qi.a(SourceFile:91)
	at ov.bk(SourceFile:410)
	at ou.d(SourceFile:1307)
	at ov.d(SourceFile:292)
	at ud.d(SourceFile:24)
	at un.d(SourceFile:155)
	at ou.o_(SourceFile:1194)
	at ov.o_(SourceFile:169)
	at ud.o_(SourceFile:29)
	at un.o_(SourceFile:211)
	at act.a(SourceFile:1351)
	at kd.a(SourceFile:479)
	at act.g(SourceFile:1329)

-- Entity being ticked --
Details:
	Entity Type: Zombie (un)
	Entity ID: 842
	Entity Name: Zombie
	Entity's Exact location: 3000121,50, 22,00, 29999968,00
	Entity's Block location: World: (3000121,22,29999968), Chunk: (at 9,1,0 in 187507,1874998; contains blocks 3000112,0,29999968 to 3000127,255,29999983), Region: (5859,58593; contains chunks 187488,1874976 to 187519,1875007, blocks 2999808,0,29999616 to 3000319,255,30000127)
	Entity's Momentum: 0,00, -0,08, 0,00
Stacktrace:
	at act.h(SourceFile:1236)
	at kd.h(SourceFile:364)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [kg['leothemejor'/251, l='New World', x=3000020,37, y=74,17, z=29999999,30]]
	Chunk stats: ServerChunkCache: 1105 Drop: 0
	Level seed: 2956537034348037765
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-56,64,244), Chunk: (at 8,4,4 in -4,15; contains blocks -64,0,240 to -49,255,255), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 19183 game time, 1780 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 136150 (now: false), thunder time: 22939 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.t(SourceFile:463)
	at net.minecraft.server.MinecraftServer.s(SourceFile:398)
	at bng.s(SourceFile:124)
	at net.minecraft.server.MinecraftServer.run(SourceFile:332)
	at hs.run(SourceFile:575)

-- 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: 332157184 bytes (316 MB) / 478281728 bytes (456 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 10868 (608608 bytes; 0 MB) allocated, 9783 (547848 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: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 2527 (141512 bytes; 0 MB) allocated, 2352 (131712 bytes; 0 MB) used
	Player Count: 1 / 8; [kg['leothemejor'/251, l='New World', x=3000020,37, y=74,17, z=29999999,30]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.