Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here

What actually happened wasmy game crashed
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. place a furnace
3. put coal in it

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 28-9-16 16:34
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
at asg.b(SourceFile:316)
at asg.c(SourceFile:372)
at acr.a(SourceFile:15)
at acg.a(SourceFile:218)
at bni.a(SourceFile:413)
at bhz.a(SourceFile:512)
at bhz.b(SourceFile:483)
at bhh.k(SourceFile:409)
at bhh.p(SourceFile:380)
at bel.t(SourceFile:1583)
at bel.av(SourceFile:967)
at bel.a(SourceFile:395)
at net.minecraft.client.main.Main.main(SourceFile:124)

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

– Head –
Thread: Client thread
Stacktrace:
at asg.b(SourceFile:316)
at asg.c(SourceFile:372)
at acr.a(SourceFile:15)
at acg.a(SourceFile:218)
at bni.a(SourceFile:413)
at bhz.a(SourceFile:512)
at bhz.b(SourceFile:483)
at bhh.k(SourceFile:409)
at bhh.p(SourceFile:380)

– Affected screen –
Details:
Screen name: bin

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bpl['ErikGroen'/1175, l='MpServer', x=54,30, y=52,00, z=215,60]]
Chunk stats: MultiplayerChunkCache: 1066, 1066
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (80,64,256), Chunk: (at 0,4,0 in 5,16; contains blocks 80,0,256 to 95,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 10065 game time, 10065 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: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 95 total; [wo['Bat'/16385, l='MpServer', x=-10,56, y=35,87, z=220,42], wo['Bat'/16437, l='MpServer', x=123,51, y=20,87, z=248,49], wo['Bat'/16438, l='MpServer', x=124,17, y=19,18, z=245,25], wo['Bat'/16439, l='MpServer', x=117,39, y=19,99, z=245,12], ws['Cow'/72, l='MpServer', x=-9,50, y=85,00, z=160,50], ws['Cow'/73, l='MpServer', x=-8,50, y=84,00, z=156,50], ws['Cow'/74, l='MpServer', x=-12,20, y=89,00, z=160,48], ws['Cow'/75, l='MpServer', x=-10,50, y=87,00, z=162,50], ws['Cow'/76, l='MpServer', x=-20,45, y=98,00, z=184,45], ws['Cow'/77, l='MpServer', x=-15,50, y=96,00, z=189,50], ws['Cow'/78, l='MpServer', x=-15,50, y=99,00, z=191,50], ws['Cow'/79, l='MpServer', x=-13,50, y=94,00, z=190,50], ws['Cow'/84, l='MpServer', x=-5,47, y=87,00, z=192,77], ws['Cow'/85, l='MpServer', x=-1,50, y=84,00, z=194,50], ws['Cow'/86, l='MpServer', x=-1,50, y=84,00, z=194,50], ws['Cow'/87, l='MpServer', x=-2,50, y=83,00, z=195,50], aak['Zombie Villager'/16471, l='MpServer', x=-12,50, y=13,00, z=245,50], ws['Cow'/88, l='MpServer', x=-4,50, y=71,00, z=230,50], aak['Zombie Villager'/16472, l='MpServer', x=-12,50, y=13,00, z=246,50], ws['Cow'/89, l='MpServer', x=-4,50, y=71,00, z=231,50], zk['Creeper'/16473, l='MpServer', x=-13,50, y=13,00, z=244,50], ws['Cow'/90, l='MpServer', x=-1,50, y=72,00, z=230,50], zk['Creeper'/16474, l='MpServer', x=-18,50, y=13,00, z=244,50], ws['Cow'/91, l='MpServer', x=-3,63, y=71,00, z=240,20], ws['Cow'/122, l='MpServer', x=65,50, y=64,00, z=141,50], ws['Cow'/123, l='MpServer', x=65,50, y=64,00, z=141,50], ws['Cow'/124, l='MpServer', x=65,50, y=64,00, z=145,50], ws['Cow'/125, l='MpServer', x=77,16, y=64,00, z=148,20], ww['Pig'/134, l='MpServer', x=91,71, y=67,00, z=140,71], ww['Pig'/135, l='MpServer', x=92,81, y=67,00, z=141,81], ww['Pig'/137, l='MpServer', x=90,63, y=67,00, z=139,63], ws['Cow'/138, l='MpServer', x=97,50, y=94,00, z=205,50], ws['Cow'/139, l='MpServer', x=96,55, y=92,00, z=206,45], ws['Cow'/140, l='MpServer', x=94,50, y=89,00, z=206,50], ws['Cow'/141, l='MpServer', x=96,23, y=91,00, z=207,46], bpl['ErikGroen'/1175, l='MpServer', x=54,30, y=52,00, z=215,60], zk['Creeper'/13941, l='MpServer', x=-13,50, y=38,00, z=231,50], aab['Skeleton'/14172, l='MpServer', x=86,74, y=40,00, z=197,53], zk['Creeper'/14342, l='MpServer', x=36,50, y=31,00, z=176,20], aaj['Zombie'/14782, l='MpServer', x=114,50, y=24,00, z=278,50], aaj['Zombie'/14786, l='MpServer', x=26,50, y=44,00, z=151,50], aak['Zombie Villager'/14791, l='MpServer', x=79,50, y=27,00, z=290,50], aaj['Zombie'/14823, l='MpServer', x=20,50, y=50,00, z=272,50], aab['Skeleton'/15150, l='MpServer', x=88,69, y=57,00, z=219,51], ze['item.item.seeds'/15215, l='MpServer', x=18,34, y=69,00, z=225,28], ze['item.item.seeds'/15228, l='MpServer', x=23,53, y=69,00, z=214,75], aab['Skeleton'/15294, l='MpServer', x=124,50, y=69,00, z=170,50], aaj['Zombie'/15348, l='MpServer', x=-1,42, y=33,00, z=288,50], aaj['Zombie'/15349, l='MpServer', x=0,50, y=33,00, z=284,50], wo['Bat'/15421, l='MpServer', x=33,09, y=28,13, z=261,88], so['Experience Orb'/15426, l='MpServer', x=35,00, y=70,00, z=221,90], zk['Creeper'/15567, l='MpServer', x=86,50, y=26,00, z=273,50], aab['Skeleton'/15651, l='MpServer', x=36,70, y=44,00, z=244,49], aaj['Zombie'/15728, l='MpServer', x=22,50, y=43,00, z=251,50], aab['Skeleton'/15740, l='MpServer', x=15,50, y=41,00, z=224,50], aab['Skeleton'/15745, l='MpServer', x=25,50, y=23,00, z=164,50], wo['Bat'/15750, l='MpServer', x=22,12, y=41,40, z=263,25], zm['Enderman'/15803, l='MpServer', x=31,50, y=29,00, z=276,50], wo['Bat'/15866, l='MpServer', x=34,09, y=46,10, z=232,47], wo['Bat'/15867, l='MpServer', x=36,75, y=42,10, z=246,60], wo['Bat'/15953, l='MpServer', x=43,35, y=15,77, z=179,24], aab['Skeleton'/15969, l='MpServer', x=37,50, y=31,00, z=176,50], zk['Creeper'/15970, l='MpServer', x=38,50, y=31,00, z=172,50], aab['Skeleton'/15971, l='MpServer', x=49,50, y=31,00, z=179,50], zk['Creeper'/15992, l='MpServer', x=6,50, y=49,00, z=270,50], aab['Skeleton'/16000, l='MpServer', x=25,50, y=57,00, z=290,50], aaj['Zombie'/16047, l='MpServer', x=-1,50, y=50,00, z=261,97], aaj['Zombie'/16048, l='MpServer', x=3,50, y=50,00, z=258,50], aaj['Zombie'/16049, l='MpServer', x=2,50, y=50,00, z=255,50], aaj['Zombie'/16050, l='MpServer', x=-1,50, y=49,00, z=262,70], zk['Creeper'/16051, l='MpServer', x=25,50, y=44,00, z=272,50], zk['Creeper'/11976, l='MpServer', x=33,41, y=32,00, z=208,79], aab['Skeleton'/16092, l='MpServer', x=19,72, y=53,00, z=263,24], wo['Bat'/16157, l='MpServer', x=20,51, y=48,14, z=255,07], aab['Skeleton'/16175, l='MpServer', x=1,50, y=48,00, z=253,50], aab['Skeleton'/16176, l='MpServer', x=1,50, y=48,00, z=253,50], aab['Skeleton'/16177, l='MpServer', x=0,50, y=48,00, z=253,50], aaj['Zombie'/16180, l='MpServer', x=111,80, y=43,00, z=288,49], wo['Bat'/16201, l='MpServer', x=51,74, y=13,28, z=168,01], zk['Creeper'/12107, l='MpServer', x=89,29, y=42,00, z=208,84], aab['Skeleton'/16208, l='MpServer', x=41,49, y=19,00, z=183,72], aab['Skeleton'/16209, l='MpServer', x=41,50, y=19,00, z=186,50], zk['Creeper'/16210, l='MpServer', x=42,80, y=19,00, z=184,50], zk['Creeper'/16231, l='MpServer', x=26,50, y=27,00, z=267,50], aad['Spider'/16232, l='MpServer', x=25,50, y=27,00, z=259,50], aaj['Zombie'/16266, l='MpServer', x=111,50, y=23,00, z=268,50], wo['Bat'/16282, l='MpServer', x=-21,81, y=14,48, z=266,11], aab['Skeleton'/16303, l='MpServer', x=20,50, y=40,00, z=225,29], aab['Skeleton'/16304, l='MpServer', x=22,50, y=37,00, z=219,50], aab['Skeleton'/16305, l='MpServer', x=22,50, y=37,00, z=219,50], aab['Skeleton'/16306, l='MpServer', x=22,50, y=37,00, z=220,50], aaj['Zombie'/16339, l='MpServer', x=87,50, y=37,00, z=186,50], aaj['Zombie'/16340, l='MpServer', x=83,80, y=39,00, z=191,48], aaj['Zombie'/16341, l='MpServer', x=86,50, y=40,00, z=196,20], aab['Skeleton'/16342, l='MpServer', x=83,77, y=38,00, z=183,54]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bnj.a(SourceFile:365)
at bel.b(SourceFile:2536)
at bel.a(SourceFile:404)
at net.minecraft.client.main.Main.main(SourceFile:124)

– System Details –
Details:
Minecraft Version: 16w39a
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_25, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 237399840 bytes (226 MB) / 552628224 bytes (527 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: 12, tallocated: 94
Launched Version: 16w39a
LWJGL: 2.9.4
OpenGL: AMD Radeon R7 200 Series GL version 4.5.13447 Compatibility Profile Context 16.300.2511.1003, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because OpenGL 3.0 is supported and separate blending is supported.
Shaders are available because OpenGL 2.1 is supported.
VBOs are available because OpenGL 1.5 is supported.

Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs:
Current Language: English (US)
Profiler Position: N/A (disabled)
CPU: 4x AMD A10-5800K APU with Radeon(tm) HD Graphics