---- Minecraft Crash Report ----
// Don't do that.

Time: 10/10/16 11:27 AM
Description: Ticking player

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
	at st.bP(SourceFile:510)
	at st.U(SourceFile:310)
	at sk.A_(SourceFile:350)
	at st.A_(SourceFile:1627)
	at aau.A_(SourceFile:270)
	at lx.k_(SourceFile:282)
	at mh.F_(SourceFile:179)
	at er.a(SourceFile:232)
	at mg.c(SourceFile:187)
	at net.minecraft.server.MinecraftServer.D(SourceFile:652)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at ccb.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 java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
	at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
	at st.bP(SourceFile:510)
	at st.U(SourceFile:310)
	at sk.A_(SourceFile:350)
	at st.A_(SourceFile:1627)
	at aau.A_(SourceFile:270)

-- Player being ticked --
Details:
	Entity Type: null (lx)
	Entity ID: 201
	Entity Name: TCAtrevor
	Entity's Exact location: -11214.96, 64.00, 12390.07
	Entity's Block location: World: (-11215,64,12390), Chunk: (at 1,4,6 in -701,774; contains blocks -11216,0,12384 to -11201,255,12399), Region: (-22,24; contains chunks -704,768 to -673,799, blocks -11264,0,12288 to -10753,255,12799)
	Entity's Momentum: 0.00, -0.08, 0.00
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at lx.k_(SourceFile:282)
	at mh.F_(SourceFile:179)
	at er.a(SourceFile:232)

-- Ticking connection --
Details:
	Connection: er@6b42b2ad
Stacktrace:
	at mg.c(SourceFile:187)
	at net.minecraft.server.MinecraftServer.D(SourceFile:652)
	at net.minecraft.server.MinecraftServer.C(SourceFile:562)
	at ccb.C(SourceFile:154)
	at net.minecraft.server.MinecraftServer.run(SourceFile:466)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 16w40a
	Operating System: Mac OS X (x86_64) version 10.12
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 221335472 bytes (211 MB) / 905650176 bytes (863 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 5 total; -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lx['TCAtrevor'/201, l='1.10 SNAPSHOT YAAAAAA!', x=-11214.96, y=64.00, z=12390.07]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.