Continual Ticking Entity Crash. Hostile MOB, Passive & NULL Entities

Quite a few times now my server has crashed due to Ticking Entity, and in most cases its a Mob or Animal Entity an occasionally an actual user

---- Minecraft Crash Report ----
// Ouch. That hurt :(

Time: 7/31/14 6:25 AM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
	at aay.l(SourceFile:207)
	at aay.k(SourceFile:155)
	at xl.bE(SourceFile:450)
	at xk.l(SourceFile:1430)
	at xl.l(SourceFile:316)
	at afc.l(SourceFile:39)
	at afm.l(SourceFile:151)
	at xk.j(SourceFile:1298)
	at xl.j(SourceFile:194)
	at afc.j(SourceFile:44)
	at aqh.a(SourceFile:1410)
	at qo.a(SourceFile:601)
	at aqh.g(SourceFile:1388)
	at aqh.i(SourceFile:1281)
	at qo.i(SourceFile:479)
	at net.minecraft.server.MinecraftServer.y(SourceFile:606)
	at pk.y(SourceFile:303)
	at net.minecraft.server.MinecraftServer.x(SourceFile:530)
	at net.minecraft.server.MinecraftServer.run(SourceFile:446)
	at java.lang.Thread.run(Thread.java:744)


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

-- Head --
Stacktrace:
	at aay.l(SourceFile:207)
	at aay.k(SourceFile:155)
	at xl.bE(SourceFile:450)
	at xk.l(SourceFile:1430)
	at xl.l(SourceFile:316)
	at afc.l(SourceFile:39)
	at afm.l(SourceFile:151)
	at xk.j(SourceFile:1298)
	at xl.j(SourceFile:194)
	at afc.j(SourceFile:44)
	at aqh.a(SourceFile:1410)
	at qo.a(SourceFile:601)
	at aqh.g(SourceFile:1388)

-- Entity being ticked --
Details:
	Entity Type: Skeleton (afm)
	Entity ID: 9942190
	Entity Name: Skeleton
	Entity's Exact location: -187.47, 69.00, 58.10
	Entity's Block location: -188.00,69.00,58.00 - World: (-188,69,58), Chunk: (at 4,4,10 in -12,3; contains blocks -192,0,48 to -177,255,63), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Entity's Momentum: 0.01, -0.08, 0.07
	Entity's Rider: ~~ERROR~~ NullPointerException: null
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at aqh.i(SourceFile:1281)
	at qo.i(SourceFile:479)

-- Affected level --
Details:
	Level name: world
	All players: 19 total; [qr['Gyr721'/632, l='world', x=-226.39, y=69.00, z=3729.02], qr['nathandow6010'/1997, l='world', x=719.51, y=78.00, z=171.20], qr['Quelleke'/86991, l='world', x=-922.84, y=18.00, z=-1379.24], qr['ryz0'/133814, l='world', x=3.95, y=63.02, z=8.58], qr['assistu'/165082, l='world', x=199.30, y=72.00, z=3055.30], qr['Morpheus1101'/282000, l='world', x=-194.46, y=64.00, z=183.68], qr['grappenmakers'/1717, l='world', x=-1029.69, y=63.00, z=-1400.66], qr['Kinitor'/1074616, l='world', x=-931.30, y=9.00, z=-1387.30], qr['shamsnl2001'/2620231, l='world', x=851.45, y=93.00, z=203.04], qr['SteveA793'/6408298, l='world', x=907.94, y=102.00, z=235.42], qr['pimnl2001'/6485061, l='world', x=908.29, y=104.00, z=244.15], qr['Characters_Inc'/7197356, l='world', x=-34.30, y=66.00, z=485.84], qr['XBlastersX'/5773615, l='world', x=-180.86, y=70.00, z=73.46], qr['dinidini'/27315, l='world', x=-194.20, y=65.17, z=181.31], qr['Rashed_Gamer'/9379438, l='world', x=-34.63, y=67.00, z=483.20], qr['007Ginger'/9628488, l='world', x=-41.87, y=66.17, z=501.76], qr['wh1t3f0x'/9112892, l='world', x=-213.85, y=72.00, z=219.70], qr['fr13d5ch3'/6041735, l='world', x=-212.68, y=72.00, z=224.25], qr['LEGOBUILDCITY10'/245064, l='world', x=-201.98, y=74.00, z=176.25]]
	Chunk stats: ServerChunkCache: 3823 Drop: 0
	Level seed: -4687366923960175429
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options: 
	Level spawn location: -203.00,70.00,192.00 - World: (-203,70,192), Chunk: (at 5,4,0 in -13,12; contains blocks -208,0,192 to -193,255,207), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 549437 game time, 1050427 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: false
Stacktrace:
	at net.minecraft.server.MinecraftServer.y(SourceFile:606)
	at pk.y(SourceFile:303)
	at net.minecraft.server.MinecraftServer.x(SourceFile:530)
	at net.minecraft.server.MinecraftServer.run(SourceFile:446)
	at java.lang.Thread.run(Thread.java:744)

-- System Details --
Details:
	Minecraft Version: 14w31a
	Operating System: Linux (amd64) version 3.10.23-xxxx-std-ipv6-64
	Java Version: 1.7.0_55, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 6264095944 bytes (5973 MB) / 7409762304 bytes (7066 MB) up to 7409762304 bytes (7066 MB)
	JVM Flags: 2 total; -Xmx7168M -Xms7168M
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 19 / 60; [qr['Gyr721'/632, l='world', x=-226.39, y=69.00, z=3729.02], qr['nathandow6010'/1997, l='world', x=719.51, y=78.00, z=171.20], qr['Quelleke'/86991, l='world', x=-922.84, y=18.00, z=-1379.24], qr['ryz0'/133814, l='world', x=3.95, y=63.02, z=8.58], qr['assistu'/165082, l='world', x=199.30, y=72.00, z=3055.30], qr['Morpheus1101'/282000, l='world', x=-194.46, y=64.00, z=183.68], qr['grappenmakers'/1717, l='world', x=-1029.69, y=63.00, z=-1400.66], qr['Kinitor'/1074616, l='world', x=-931.30, y=9.00, z=-1387.30], qr['shamsnl2001'/2620231, l='world', x=851.45, y=93.00, z=203.04], qr['SteveA793'/6408298, l='world', x=907.94, y=102.00, z=235.42], qr['pimnl2001'/6485061, l='world', x=908.29, y=104.00, z=244.15], qr['Characters_Inc'/7197356, l='world', x=-34.30, y=66.00, z=485.84], qr['XBlastersX'/5773615, l='world', x=-180.86, y=70.00, z=73.46], qr['dinidini'/27315, l='world', x=-194.20, y=65.17, z=181.31], qr['Rashed_Gamer'/9379438, l='world', x=-34.63, y=67.00, z=483.20], qr['007Ginger'/9628488, l='world', x=-41.87, y=66.17, z=501.76], qr['wh1t3f0x'/9112892, l='world', x=-213.85, y=72.00, z=219.70], qr['fr13d5ch3'/6041735, l='world', x=-212.68, y=72.00, z=224.25], qr['LEGOBUILDCITY10'/245064, l='world', x=-201.98, y=74.00, z=176.25]]
	Is Modded: Unknown (can't tell)
	Type: Dedicated Server (map_server.txt)