---- Minecraft Crash Report ----
// Daisy, daisy...

Time: 8/13/15 8:24 PM
Description: Executing command block

java.lang.NullPointerException: Executing command block
	at java.util.Collections.addAll(Collections.java:5400)
	at o.a(SourceFile:151)
	at o.b(SourceFile:119)
	at j.a(SourceFile:49)
	at afs.a(SourceFile:98)
	at aiq.b(SourceFile:56)
	at lg.a(SourceFile:529)
	at lg.d(SourceFile:201)
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bud.C(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	at java.lang.Thread.run(Thread.java:745)


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

-- Head --
Stacktrace:
	at java.util.Collections.addAll(Collections.java:5400)
	at o.a(SourceFile:151)
	at o.b(SourceFile:119)
	at j.a(SourceFile:49)

-- Command to be executed --
Details:
	Command: /scoreboard players set @a[] Playing 0
	Name: @
Stacktrace:
	at afs.a(SourceFile:98)
	at aiq.b(SourceFile:56)

-- Block being ticked --
Details:
	Block: minecraft:command_block[triggered=true]
	Block location: World: (156,70,377), Chunk: (at 12,4,9 in 9,23; contains blocks 144,0,368 to 159,255,383), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Stacktrace:
	at lg.a(SourceFile:529)
	at lg.d(SourceFile:201)

-- Affected level --
Details:
	Level name: Snake
	All players: 0 total; []
	Chunk stats: ServerChunkCache: 989 Drop: 717
	Level seed: -1146729838
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 64x24
	Level spawn location: 157.00,64.00,376.00 - World: (157,64,376), Chunk: (at 13,4,8 in 9,23; contains blocks 144,0,368 to 159,255,383), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 18390 game time, 6000 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 1 (now: false), thunder time: 1 (now: false)
	Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:617)
	at net.minecraft.server.MinecraftServer.C(SourceFile:553)
	at bud.C(SourceFile:152)
	at net.minecraft.server.MinecraftServer.run(SourceFile:457)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 15w33b
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 284602064 bytes (271 MB) / 543772672 bytes (518 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Player Count: 0 / 8; []
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.