Game crash when attacked by blaze

Just tried to open the game back up and it crashes everytime the world loads.

Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: @unknown

Time: 12/3/15 1:16 PM
Description: Ticking entity

java.lang.NullPointerException: Ticking entity
at aaa.a(SourceFile:44)
at zu.m(SourceFile:117)
at ahn.a(SourceFile:1467)
at lp.a(SourceFile:719)
at ahn.g(SourceFile:1445)
at ahn.k(SourceFile:1335)
at lp.k(SourceFile:552)
at net.minecraft.server.MinecraftServer.D(SourceFile:625)
at net.minecraft.server.MinecraftServer.C(SourceFile:553)
at bxz.C(SourceFile:154)
at net.minecraft.server.MinecraftServer.run(SourceFile:457)
at java.lang.Thread.run(Unknown Source)

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

– Head –
Stacktrace:
at aaa.a(SourceFile:44)
at zu.m(SourceFile:117)
at ahn.a(SourceFile:1467)
at lp.a(SourceFile:719)
at ahn.g(SourceFile:1445)

– Entity being ticked –
Details:
Entity Type: SmallFireball (aaa)
Entity ID: 29344
Entity Name: Small Fireball
Entity's Exact location: -1403.46, 71.63, -1095.71
Entity's Block location: World: (-1404,71,-1096), Chunk: (at 4,4,8 in -88,-69; contains blocks -1408,0,-1104 to -1393,255,-1089), Region: (-3,-3; contains chunks -96,-96 to -65,-65, blocks -1536,0,-1536 to -1025,255,-1025)
Entity's Momentum: -0.51, -0.24, 0.11
Entity's Passengers: []
Entity's Vehicle: ~_ERROR~ NullPointerException: null
Stacktrace:
at ahn.k(SourceFile:1335)
at lp.k(SourceFile:552)

– Affected level –
Details:
Level name: Riele
All players: 1 total; [lr['Brireina'/389, l='Riele', x=-1409.59, y=67.00, z=-1096.51]]
Chunk stats: ServerChunkCache: 323 Drop: 0
Level seed: 3875145351011509202
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (0,0,0), Chunk: (at 0,0,0 in 0,0; contains blocks 0,0,0 to 15,255,15), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 0 game time, 0 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: false), thunder time: 0 (now: false)
Level game mode: ~_ERROR~ NullPointerException: null
Stacktrace:
at net.minecraft.server.MinecraftServer.D(SourceFile:625)
at net.minecraft.server.MinecraftServer.C(SourceFile:553)
at bxz.C(SourceFile:154)
at net.minecraft.server.MinecraftServer.run(SourceFile:457)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 15w49b
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.8.0_31, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode), Oracle Corporation
Memory: 191522136 bytes (182 MB) / 523501568 bytes (499 MB) up to 523501568 bytes (499 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 98
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [lr['Brireina'/389, l='Riele', x=-1409.59, y=67.00, z=-1096.51]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.

Reproducible in 15w49b.

This could be similar to the REALMS-269 bug. I have downloaded my realms game where a similar event happened and it crashes everytime I want to load it. both on IOS PE and Windows 10 PE. (Also when I login to the realm it crashes, but other players can still enter the realm).