---- Minecraft Crash Report ----
// There are four lights!

Time: 9/28/16 6:28 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: 4 / 0x4 / 0b0100
	Block location: World: (173,60,-186), Chunk: (at 13,3,6 in 10,-12; contains blocks 160,0,-192 to 175,255,-177), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Actual block type: ID #154 (tile.hopper // aoa)
	Actual block data value: 4 / 0x4 / 0b0100
Stacktrace:
	at ajl.k(SourceFile:1429)
	at lv.k(SourceFile:549)

-- Affected level --
Details:
	Level name: #1 Ultimate Creative Build World
	All players: 1 total; [lx['Nepthys7'/12, l='#1 Ultimate Creative Build World', x=270.92, y=71.37, z=-43.87]]
	Chunk stats: ServerChunkCache: 1589 Drop: 0
	Level seed: 4441460706114467980
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 3;minecraft:bedrock,58*minecraft:stone,4*minecraft:dirt,minecraft:grass;1;village
	Level spawn location: World: (313,4,-425), Chunk: (at 9,0,7 in 19,-27; contains blocks 304,0,-432 to 319,255,-417), Region: (0,-1; contains chunks 0,-32 to 31,-1, blocks 0,0,-512 to 511,255,-1)
	Level time: 288243 game time, 1000 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: survival (ID 0). Hardcore: false. Cheats: true
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: 148077456 bytes (141 MB) / 317063168 bytes (302 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: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lx['Nepthys7'/12, l='#1 Ultimate Creative Build World', x=270.92, y=71.37, z=-43.87]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.