---- Minecraft Crash Report ----
// Surprise! Haha. Well, this is awkward.

Time: 10/1/16 10:24 AM
Description: Ticking player

java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.remove(HashMap.java:1443)
	at st.bO(SourceFile:515)
	at st.U(SourceFile:310)
	at sk.A_(SourceFile:351)
	at st.A_(SourceFile:1621)
	at aav.A_(SourceFile:271)
	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.remove(HashMap.java:1443)
	at st.bO(SourceFile:515)
	at st.U(SourceFile:310)
	at sk.A_(SourceFile:351)
	at st.A_(SourceFile:1621)
	at aav.A_(SourceFile:271)

-- Player being ticked --
Details:
	Entity Type: null (lx)
	Entity ID: 0
	Entity Name: MHF_Purpur
	Entity's Exact location: 12.37, 4.00, 16.15
	Entity's Block location: World: (12,4,16), Chunk: (at 12,0,0 in 0,1; contains blocks 0,0,16 to 15,255,31), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	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@3e1006b7
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: 16w39c
	Operating System: Mac OS X (x86_64) version 10.11.5
	Java Version: 1.8.0_74, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 81508672 bytes (77 MB) / 271839232 bytes (259 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: 0, tallocated: 0
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [lx['MHF_Purpur'/0, l='{parkour}', x=12.37, y=4.00, z=16.15]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.