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

Time: 28/09/16 2:19 PM
Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
	at asg.b(SourceFile:316)
	at asg.c(SourceFile:372)
	at asg.b(SourceFile:401)
	at asi.a(SourceFile:345)
	at asi.a(SourceFile:364)
	at asi.a(SourceFile:332)
	at asi.J(SourceFile:193)
	at asi.o(SourceFile:135)
	at asi.F_(SourceFile:122)
	at ajl.k(SourceFile:1429)
	at lv.k(SourceFile:549)
	at net.minecraft.server.MinecraftServer.D(SourceFile:634)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cby.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	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 --
Thread: Server thread
Stacktrace:
	at asg.b(SourceFile:316)
	at asg.c(SourceFile:372)
	at asg.b(SourceFile:401)
	at asi.a(SourceFile:345)
	at asi.a(SourceFile:364)
	at asi.a(SourceFile:332)
	at asi.J(SourceFile:193)
	at asi.o(SourceFile:135)
	at asi.F_(SourceFile:122)

-- Block entity being ticked --
Details:
	Name: minecraft:hopper // asi
	Block type: ID #154 (tile.hopper // aoa)
	Block data value: 2 / 0x2 / 0b0010
	Block location: World: (-580,29,2970), Chunk: (at 12,1,10 in -37,185; contains blocks -592,0,2960 to -577,255,2975), Region: (-2,5; contains chunks -64,160 to -33,191, blocks -1024,0,2560 to -513,255,3071)
	Actual block type: ID #154 (tile.hopper // aoa)
	Actual block data value: 2 / 0x2 / 0b0010
Stacktrace:
	at ajl.k(SourceFile:1429)
	at lv.k(SourceFile:549)

-- Affected level --
Details:
	Level name: New World 200
	All players: 1 total; [lx['ethanwil'/193, l='New World 200', x=-593.26, y=64.00, z=2959.62]]
	Chunk stats: ServerChunkCache: 2650 Drop: 0
	Level seed: -7625564283067403202
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: World: (-188,64,256), Chunk: (at 4,4,0 in -12,16; contains blocks -192,0,256 to -177,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 15913487 game time, 12056895 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 25811 (now: false), thunder time: 24302 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.D(SourceFile:634)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at cby.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 16w39a
	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: 146346720 bytes (139 MB) / 452857856 bytes (431 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: 1 / 8; [lx['ethanwil'/193, l='New World 200', x=-593.26, y=64.00, z=2959.62]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.