/summon Zombie 220 64 398 {Equipment:[{},{},{},{},{id:280}],Attributes:[{Name:generic.followRange,Base:250},{Name:generic.maxHealth,Base:1}],ActiveEffects:[{Id:11,Amplifier:50,Duration:100}],PersistenceRequired:1}

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

Time: 10-11-13 11:43
Description: Ticking entity

java.lang.IllegalArgumentException: n must be positive
	at java.util.Random.nextInt(Unknown Source)
	at agm.a(SourceFile:122)
	at agm.a(SourceFile:27)
	at agg.a(SourceFile:362)
	at apl.a(SourceFile:432)
	at mi.a(SourceFile:160)
	at aoj.a(SourceFile:781)
	at mi.c(SourceFile:95)
	at mi.d(SourceFile:108)
	at afn.e(SourceFile:311)
	at agd.<init>(SourceFile:31)
	at afn.a(SourceFile:2212)
	at uh.a(SourceFile:79)
	at uh.a(SourceFile:83)
	at to.c(SourceFile:41)
	at sv.a(SourceFile:94)
	at ri.bn(SourceFile:420)
	at rh.e(SourceFile:1318)
	at ri.e(SourceFile:295)
	at ws.e(SourceFile:25)
	at xc.e(SourceFile:173)
	at rh.h(SourceFile:1205)
	at ri.h(SourceFile:171)
	at ws.h(SourceFile:30)
	at xc.h(SourceFile:229)
	at afn.a(SourceFile:1368)
	at mj.a(SourceFile:480)
	at afn.g(SourceFile:1346)
	at afn.h(SourceFile:1253)
	at mj.h(SourceFile:365)
	at net.minecraft.server.MinecraftServer.u(SourceFile:511)
	at net.minecraft.server.MinecraftServer.t(SourceFile:441)
	at bsk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:358)
	at ky.run(SourceFile:617)


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 agm.a(SourceFile:122)
	at agm.a(SourceFile:27)
	at agg.a(SourceFile:362)
	at apl.a(SourceFile:432)
	at mi.a(SourceFile:160)
	at aoj.a(SourceFile:781)
	at mi.c(SourceFile:95)
	at mi.d(SourceFile:108)
	at afn.e(SourceFile:311)
	at agd.<init>(SourceFile:31)
	at afn.a(SourceFile:2212)
	at uh.a(SourceFile:79)
	at uh.a(SourceFile:83)
	at to.c(SourceFile:41)
	at sv.a(SourceFile:94)
	at ri.bn(SourceFile:420)
	at rh.e(SourceFile:1318)
	at ri.e(SourceFile:295)
	at ws.e(SourceFile:25)
	at xc.e(SourceFile:173)
	at rh.h(SourceFile:1205)
	at ri.h(SourceFile:171)
	at ws.h(SourceFile:30)
	at xc.h(SourceFile:229)
	at afn.a(SourceFile:1368)
	at mj.a(SourceFile:480)
	at afn.g(SourceFile:1346)

-- Entity being ticked --
Details:
	Entity Type: Zombie (xc)
	Entity ID: 0
	Entity Name: Zombie
	Entity's Exact location: 77,50, 64,00, 310,50
	Entity's Block location: World: (77,64,310), Chunk: (at 13,4,6 in 4,19; contains blocks 64,0,304 to 79,255,319), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0,00, -0,08, 0,00
Stacktrace:
	at afn.h(SourceFile:1253)
	at mj.h(SourceFile:365)

-- Affected level --
Details:
	Level name: world
	All players: 1 total; [mm['DERIKUF'/88, l='world', x=198,89, y=64,00, z=398,02]]
	Chunk stats: ServerChunkCache: 1843 Drop: 0
	Level seed: 6548884773994259817
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (98,64,358), Chunk: (at 2,4,6 in 6,22; contains blocks 96,0,352 to 111,255,367), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 4547262 game time, 9499 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 18767750 (now: false), thunder time: 18767750 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.u(SourceFile:511)
	at net.minecraft.server.MinecraftServer.t(SourceFile:441)
	at bsk.t(SourceFile:117)
	at net.minecraft.server.MinecraftServer.run(SourceFile:358)
	at ky.run(SourceFile:617)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_17, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 151847112 bytes (144 MB) / 340983808 bytes (325 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	AABB Pool Size: 1875 (105000 bytes; 0 MB) allocated, 6 (336 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1381 (77336 bytes; 0 MB) allocated, 12 (672 bytes; 0 MB) used
	Player Count: 1 / 8; [mm['DERIKUF'/88, l='world', x=198,89, y=64,00, z=398,02]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.