---- Minecraft Crash Report ----
// On the bright side, I bought you a teddy bear!

Time: 5/23/16 3:28 PM
Description: Executing command block

java.lang.NullPointerException: Executing command block
	at rv.a(SourceFile:324)
	at p$1.a(SourceFile:188)
	at p$1.apply(SourceFile:185)
	at com.google.common.base.Predicates$AndPredicate.apply(Predicates.java:359)
	at com.google.common.base.Predicates$AndPredicate.apply(Predicates.java:359)
	at aia.a(SourceFile:2283)
	at p.a(SourceFile:490)
	at p.b(SourceFile:143)
	at k.a(SourceFile:51)
	at ahp.a(SourceFile:114)
	at aku.b(SourceFile:96)
	at lr.a(SourceFile:645)
	at lr.d(SourceFile:216)
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:554)
	at bzg.C(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:458)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Thread: Server thread
Stacktrace:
	at rv.a(SourceFile:324)
	at p$1.a(SourceFile:188)
	at p$1.apply(SourceFile:185)
	at com.google.common.base.Predicates$AndPredicate.apply(Predicates.java:359)
	at com.google.common.base.Predicates$AndPredicate.apply(Predicates.java:359)
	at aia.a(SourceFile:2283)
	at p.a(SourceFile:490)
	at p.b(SourceFile:143)
	at k.a(SourceFile:51)

-- Command to be executed --
Details:
	Command: kill @e[type=Slime]
	Name: @
Stacktrace:
	at ahp.a(SourceFile:114)
	at aku.b(SourceFile:96)

-- Block being ticked --
Details:
	Block: minecraft:command_block[conditional=false,facing=east]
	Block location: World: (-890,4,1409), Chunk: (at 6,0,1 in -56,88; contains blocks -896,0,1408 to -881,255,1423), Region: (-2,2; contains chunks -64,64 to -33,95, blocks -1024,0,1024 to -513,255,1535)
Stacktrace:
	at lr.a(SourceFile:645)
	at lr.d(SourceFile:216)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [lt['HoangHaiGamerYT'/620, l='New World', x=-846.97, y=4.00, z=1428.48]]
	Chunk stats: ServerChunkCache: 415 Drop: 0
	Level seed: 8639794492513503104
	Level generator: ID 01 - flat, ver 0. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-939,4,1404), Chunk: (at 5,0,12 in -59,87; contains blocks -944,0,1392 to -929,255,1407), Region: (-2,2; contains chunks -64,64 to -33,95, blocks -1024,0,1024 to -513,255,1535)
	Level time: 95674 game time, 128653 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 109575 (now: false), thunder time: 145620 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:618)
	at net.minecraft.server.MinecraftServer.C(SourceFile:554)
	at bzg.C(SourceFile:155)
	at net.minecraft.server.MinecraftServer.run(SourceFile:458)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 16w20a
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.8.0_91, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
	Memory: 140604400 bytes (134 MB) / 251035648 bytes (239 MB) up to 523501568 bytes (499 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lt['HoangHaiGamerYT'/620, l='New World', x=-846.97, y=4.00, z=1428.48]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.