Hopper: java.lang.NullPointerException: Updating screen events

java.lang.NullPointerException: Updating screen events
	at bdq.a(SourceFile:349)
	at bco.d(SourceFile:239)
	at bco.k(SourceFile:211)

---- Minecraft Crash Report ----
// Don't be sad, have a hug! <3

Time: 26/02/14 14:54
Description: Updating screen events

java.lang.NullPointerException: Updating screen events
	at bdq.a(SourceFile:349)
	at bco.d(SourceFile:239)
	at bco.k(SourceFile:211)
	at azl.p(SourceFile:1303)
	at azl.ah(SourceFile:757)
	at azl.f(SourceFile:711)
	at net.minecraft.client.main.Main.main(SourceFile:148)


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

-- Head --
Stacktrace:
	at bdq.a(SourceFile:349)
	at bco.d(SourceFile:239)
	at bco.k(SourceFile:211)

-- Affected screen --
Details:
	Screen name: bel

-- Affected level --
Details:
	Level name: MpServer
	All players: 4 total; [bkl['zachkou11'/10228, l='MpServer', x=-2257,37, y=47,62, z=950,44], bmk['jim3143'/3, l='MpServer', x=-2266,58, y=46,00, z=951,16], bmk['xXinSpartaXx'/4, l='MpServer', x=-2266,70, y=46,13, z=950,60], bmk['SilverRuh'/5, l='MpServer', x=-2257,91, y=46,00, z=951,90]]
	Chunk stats: MultiplayerChunkCache: 590, 590
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-2134,77,522), Chunk: (at 10,4,10 in -134,32; contains blocks -2144,0,512 to -2129,255,527), Region: (-5,1; contains chunks -160,32 to -129,63, blocks -2560,0,512 to -2049,255,1023)
	Level time: 17603560 game time, 18239 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: 111 total; [bmk['jim3143'/3, l='MpServer', x=-2266,58, y=46,00, z=951,16], bmk['xXinSpartaXx'/4, l='MpServer', x=-2266,70, y=46,13, z=950,60], bmk['SilverRuh'/5, l='MpServer', x=-2257,91, y=46,00, z=951,90], ry['Peinture'/7, l='MpServer', x=-2168,94, y=49,50, z=907,50], wq['entity.MinecartSpawner.name'/45430, l='MpServer', x=-2330,50, y=47,34, z=943,50], ry['Peinture'/8, l='MpServer', x=-2168,94, y=49,50, z=907,50], xs['§aAlern'/11, l='MpServer', x=-2209,38, y=48,00, z=909,25], ry['Peinture'/12, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/13, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/14, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/15, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/17, l='MpServer', x=-2178,50, y=49,50, z=917,06], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], bmk['jim3143'/3, l='MpServer', x=-2148,09, y=49,00, z=687,97], xn['Archangel'/28477, l='MpServer', x=-2265,50, y=50,00, z=947,50], bkl['zachkou11'/10228, l='MpServer', x=-2248,64, y=45,62, z=959,70], ry['Peinture'/25, l='MpServer', x=-2159,94, y=48,50, z=914,50], ry['Peinture'/13, l='MpServer', x=-2188,06, y=49,50, z=907,50], bmk['xXinSpartaXx'/4, l='MpServer', x=-2147,50, y=49,52, z=686,50], ry['Peinture'/24, l='MpServer', x=-2196,94, y=48,50, z=929,50], ry['Peinture'/12, l='MpServer', x=-2188,06, y=49,50, z=907,50], bmk['SilverRuh'/5, l='MpServer', x=-2147,84, y=49,00, z=686,84], ry['Peinture'/40, l='MpServer', x=-2161,06, y=49,50, z=921,00], ry['Peinture'/35, l='MpServer', x=-2184,06, y=47,50, z=928,50], ry['Peinture'/14, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/39, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/15, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/40, l='MpServer', x=-2161,06, y=49,50, z=921,00], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/41, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/14, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/35, l='MpServer', x=-2184,06, y=47,50, z=928,50], ry['Peinture'/17, l='MpServer', x=-2178,50, y=49,50, z=917,06], ry['Peinture'/15, l='MpServer', x=-2178,50, y=49,50, z=897,94], xs['§aVictor'/294, l='MpServer', x=-2187,00, y=48,00, z=899,00], ry['Peinture'/7, l='MpServer', x=-2168,94, y=49,50, z=907,50], xi['§cMaltorn'/29113, l='MpServer', x=-2261,15, y=46,02, z=949,07], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/8, l='MpServer', x=-2168,94, y=49,50, z=907,50], ry['Peinture'/12, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/15, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/13, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/14, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], xs['Villageois'/28516, l='MpServer', x=-2264,50, y=49,39, z=947,50], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/24, l='MpServer', x=-2196,94, y=48,50, z=929,50], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/13, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/35, l='MpServer', x=-2184,06, y=47,50, z=928,50], ry['Peinture'/12, l='MpServer', x=-2188,06, y=49,50, z=907,50], ry['Peinture'/24, l='MpServer', x=-2196,94, y=48,50, z=929,50], xs['Villageois'/45354, l='MpServer', x=-2251,50, y=35,00, z=964,50], ry['Peinture'/35, l='MpServer', x=-2184,06, y=47,50, z=928,50], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/17, l='MpServer', x=-2178,50, y=49,50, z=917,06], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], bmk['SilverRuh'/5, l='MpServer', x=-2251,06, y=44,00, z=956,97], bmk['xXinSpartaXx'/4, l='MpServer', x=-2253,59, y=45,16, z=960,38], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/7, l='MpServer', x=-2168,94, y=49,50, z=907,50], ry['Peinture'/8, l='MpServer', x=-2168,94, y=49,50, z=907,50], ry['Peinture'/39, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/40, l='MpServer', x=-2161,06, y=49,50, z=921,00], ry['Peinture'/41, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], xs['Villageois'/45314, l='MpServer', x=-2240,50, y=28,00, z=948,50], ry['Peinture'/24, l='MpServer', x=-2196,94, y=48,50, z=929,50], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/25, l='MpServer', x=-2159,94, y=48,50, z=914,50], ry['Peinture'/15, l='MpServer', x=-2178,50, y=49,50, z=897,94], ry['Peinture'/14, l='MpServer', x=-2178,50, y=49,50, z=897,94], bmk['jim3143'/3, l='MpServer', x=-2249,71, y=44,00, z=957,42], bmk['xXinSpartaXx'/4, l='MpServer', x=-2267,58, y=46,00, z=948,93], bmk['SilverRuh'/5, l='MpServer', x=-2266,17, y=46,28, z=954,14], bkl['zachkou11'/10228, l='MpServer', x=-2231,74, y=14,27, z=950,10], bmk['jim3143'/3, l='MpServer', x=-2267,31, y=45,00, z=949,44], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], wq['entity.MinecartSpawner.name'/179, l='MpServer', x=-2337,50, y=53,34, z=949,50], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], wq['entity.MinecartSpawner.name'/177, l='MpServer', x=-2337,50, y=53,34, z=945,50], ry['Peinture'/39, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/25, l='MpServer', x=-2159,94, y=48,50, z=914,50], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/41, l='MpServer', x=-2169,00, y=49,50, z=916,94], bmk['SilverRuh'/5, l='MpServer', x=-2257,91, y=46,00, z=951,90], bmk['xXinSpartaXx'/4, l='MpServer', x=-2266,70, y=46,13, z=950,60], bmk['jim3143'/3, l='MpServer', x=-2266,58, y=46,00, z=951,16], ry['Peinture'/25, l='MpServer', x=-2159,94, y=48,50, z=914,50], bmk['jim3143'/3, l='MpServer', x=-2251,38, y=44,00, z=957,85], bkl['zachkou11'/10228, l='MpServer', x=-2257,37, y=47,62, z=950,44], ry['Peinture'/40, l='MpServer', x=-2161,06, y=49,50, z=921,00], ry['Peinture'/41, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/39, l='MpServer', x=-2169,00, y=49,50, z=916,94], ry['Peinture'/7, l='MpServer', x=-2168,94, y=49,50, z=907,50], ry['Peinture'/8, l='MpServer', x=-2168,94, y=49,50, z=907,50], ry['Peinture'/24, l='MpServer', x=-2196,94, y=48,50, z=929,50], wq['entity.MinecartSpawner.name'/45440, l='MpServer', x=-2271,50, y=39,34, z=920,50], ry['Peinture'/17, l='MpServer', x=-2178,50, y=49,50, z=917,06], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/185, l='MpServer', x=-2096,50, y=52,50, z=1083,94], ry['Peinture'/184, l='MpServer', x=-2096,50, y=53,50, z=1084,94]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Non-integrated multiplayer server
Stacktrace:
	at bkg.a(SourceFile:289)
	at azl.b(SourceFile:1947)
	at azl.f(SourceFile:720)
	at net.minecraft.client.main.Main.main(SourceFile:148)

-- System Details --
Details:
	Minecraft Version: 1.7.5
	Operating System: Mac OS X (x86_64) version 10.7.5
	Java Version: 1.6.0_65, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 69877224 bytes (66 MB) / 287387648 bytes (274 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Launched Version: 1.7.5
	LWJGL: 2.9.1
	OpenGL: AMD Radeon HD 6750M OpenGL Engine GL version 2.1 ATI-7.32.12, ATI Technologies Inc.
	GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because ARB_framebuffer_object is supported and separate blending is supported.
Anisotropic filtering is supported and maximum anisotropy is 16.
Shaders are available because OpenGL 2.1 is supported.

	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: Français (France)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)