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

Time: 12/27/13 12:14 PM
Description: Exception getting block type in world

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at agr.a(SourceFile:122)
	at agr.a(SourceFile:27)
	at agl.a(SourceFile:364)
	at agt.a(SourceFile:29)
	at apq.a(SourceFile:432)
	at ml.a(SourceFile:160)
	at aoo.a(SourceFile:775)
	at ml.c(SourceFile:95)
	at ml.d(SourceFile:108)
	at afs.e(SourceFile:311)
	at afs.a(SourceFile:249)
	at amk.a(SourceFile:39)
	at mm.g(SourceFile:289)
	at mm.b(SourceFile:137)
	at net.minecraft.server.MinecraftServer.u(SourceFile:502)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at btk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)


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 agr.a(SourceFile:122)
	at agr.a(SourceFile:27)
	at agl.a(SourceFile:364)
	at agt.a(SourceFile:29)
	at apq.a(SourceFile:432)
	at ml.a(SourceFile:160)
	at aoo.a(SourceFile:775)
	at ml.c(SourceFile:95)
	at ml.d(SourceFile:108)
	at afs.e(SourceFile:311)

-- Requested block coordinates --
Details:
	Found chunk: true
	Location: World: (304,11,-202), Chunk: (at 0,0,6 in 19,-13; contains blocks 304,0,-208 to 319,255,-193), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
Stacktrace:
	at afs.a(SourceFile:249)
	at amk.a(SourceFile:39)
	at mm.g(SourceFile:289)
	at mm.b(SourceFile:137)

-- Affected level --
Details:
	Level name: SkyBlock1.1
	All players: 1 total; [mp['superexploding'/348, l='SkyBlock1.1', x=97.30, y=49.00, z=-47.61]]
	Chunk stats: ServerChunkCache: 864 Drop: 0
	Level seed: 1435672245
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-3,65,0), Chunk: (at 13,4,0 in -1,0; contains blocks -16,0,0 to -1,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 1967257 game time, 1967257 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 20427 (now: false), thunder time: 41512 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.u(SourceFile:502)
	at net.minecraft.server.MinecraftServer.t(SourceFile:440)
	at btk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:357)
	at lb.run(SourceFile:616)

-- System Details --
Details:
	Minecraft Version: 1.7.4
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 73972032 bytes (70 MB) / 328204288 bytes (313 MB) up to 954728448 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 4266 (238896 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1216 (68096 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Player Count: 1 / 8; [mp['superexploding'/348, l='SkyBlock1.1', x=97.30, y=49.00, z=-47.61]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.