---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 29/01/14 17:47
Description: Exception ticking world

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at ail.a(SourceFile:131)
	at ail.a(SourceFile:27)
	at aif.a(SourceFile:386)
	at aja.a(SourceFile:74)
	at asc.a(SourceFile:443)
	at nl.a(SourceFile:174)
	at aqz.a(SourceFile:846)
	at nl.c(SourceFile:103)
	at nl.d(SourceFile:116)
	at ahn.b(SourceFile:273)
	at nm.h(SourceFile:263)
	at nm.c(SourceFile:162)
	at net.minecraft.server.MinecraftServer.v(SourceFile:519)
	at net.minecraft.server.MinecraftServer.u(SourceFile:461)
	at bym.u(SourceFile:123)
	at net.minecraft.server.MinecraftServer.run(SourceFile:377)
	at mc.run(SourceFile:647)


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 ail.a(SourceFile:131)
	at ail.a(SourceFile:27)
	at aif.a(SourceFile:386)
	at aja.a(SourceFile:74)
	at asc.a(SourceFile:443)
	at nl.a(SourceFile:174)
	at aqz.a(SourceFile:846)
	at nl.c(SourceFile:103)
	at nl.d(SourceFile:116)
	at ahn.b(SourceFile:273)
	at nm.h(SourceFile:263)
	at nm.c(SourceFile:162)

-- Affected level --
Details:
	Level name: Lake Test
	All players: 1 total; [np['Willy_Galleta'/16, l='Lake Test', x=547,87, y=103,21, z=-0,03]]
	Chunk stats: ServerChunkCache: 1749 Drop: 0
	Level seed: 8180011340111683158
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: 515,00,63,00,634,00 - World: (515,63,634), Chunk: (at 3,3,10 in 32,39; contains blocks 512,0,624 to 527,255,639), Region: (1,1; contains chunks 32,32 to 63,63, blocks 512,0,512 to 1023,255,1023)
	Level time: 8978 game time, 8978 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 69184 (now: false), thunder time: 16781 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.v(SourceFile:519)
	at net.minecraft.server.MinecraftServer.u(SourceFile:461)
	at bym.u(SourceFile:123)
	at net.minecraft.server.MinecraftServer.run(SourceFile:377)
	at mc.run(SourceFile:647)

-- System Details --
Details:
	Minecraft Version: 14w04b
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_21, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 169366288 bytes (161 MB) / 319684608 bytes (304 MB) up to 477233152 bytes (455 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512m
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [np['Willy_Galleta'/16, l='Lake Test', x=547,87, y=103,21, z=-0,03]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.