Crash when changing graphics to "fancy"

---- Minecraft Crash Report ----
// This is a token for 1 free hug. Redeem at your nearest Mojangsta: [~~HUG~~]

Time: 19/06/14 01:13 AM
Description: Unexpected error

java.lang.IllegalArgumentException: Comparison method violates its general contract!
	at java.util.TimSort.mergeHi(Unknown Source)
	at java.util.TimSort.mergeAt(Unknown Source)
	at java.util.TimSort.mergeCollapse(Unknown Source)
	at java.util.TimSort.sort(Unknown Source)
	at java.util.TimSort.sort(Unknown Source)
	at java.util.Arrays.sort(Unknown Source)
	at cda.a(SourceFile:631)
	at ccq.a(SourceFile:1142)
	at ccq.a(SourceFile:1085)
	at ccq.b(SourceFile:937)
	at blh.ap(SourceFile:885)
	at blh.a(SourceFile:303)
	at net.minecraft.client.main.Main.main(SourceFile:121)


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

-- Head --
Stacktrace:
	at java.util.TimSort.mergeHi(Unknown Source)
	at java.util.TimSort.mergeAt(Unknown Source)
	at java.util.TimSort.mergeCollapse(Unknown Source)
	at java.util.TimSort.sort(Unknown Source)
	at java.util.TimSort.sort(Unknown Source)
	at java.util.Arrays.sort(Unknown Source)
	at cda.a(SourceFile:631)
	at ccq.a(SourceFile:1142)
	at ccq.a(SourceFile:1085)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [cbw['xXdanny2324Xx'/257, l='MpServer', x=-279.40, y=64.00, z=496.00]]
	Chunk stats: MultiplayerChunkCache: 169, 169
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: -208.00,64.00,256.00 - World: (-208,64,256), Chunk: (at 0,4,0 in -13,16; contains blocks -208,0,256 to -193,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 2995018 game time, 3014310 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: 65 total; [acf['Zombie'/12524, l='MpServer', x=-226.50, y=44.00, z=576.50], yn['Bat'/139, l='MpServer', x=-286.50, y=13.63, z=425.47], acf['Zombie'/11247, l='MpServer', x=-306.00, y=68.00, z=507.63], acf['Zombie'/5016, l='MpServer', x=-236.50, y=69.00, z=464.50], acf['Zombie'/12668, l='MpServer', x=-341.50, y=59.00, z=484.50], acf['Zombie'/12669, l='MpServer', x=-340.50, y=59.00, z=483.50], yn['Bat'/152, l='MpServer', x=-249.44, y=27.94, z=427.66], yp['Chicken'/258, l='MpServer', x=-298.69, y=68.02, z=502.56], yn['Bat'/5843, l='MpServer', x=-318.57, y=11.63, z=545.94], cbw['xXdanny2324Xx'/257, l='MpServer', x=-279.40, y=64.00, z=496.00], acf['Zombie'/384, l='MpServer', x=-254.50, y=44.02, z=573.50], abs['Skeleton'/12649, l='MpServer', x=-317.50, y=44.00, z=432.50], yn['Bat'/13841, l='MpServer', x=-286.76, y=12.08, z=427.46], aca['Spider'/388, l='MpServer', x=-221.50, y=36.02, z=543.50], abs['Skeleton'/7908, l='MpServer', x=-314.50, y=18.00, z=460.78], yz['Sheep'/343, l='MpServer', x=-334.50, y=61.02, z=573.66], yp['Chicken'/342, l='MpServer', x=-330.34, y=67.02, z=546.69], yp['Chicken'/341, l='MpServer', x=-335.25, y=68.55, z=511.17], yp['Chicken'/340, l='MpServer', x=-334.45, y=68.54, z=511.74], yp['Chicken'/339, l='MpServer', x=-335.36, y=68.48, z=511.85], yp['Chicken'/338, l='MpServer', x=-335.59, y=68.63, z=510.56], yp['Chicken'/337, l='MpServer', x=-335.97, y=68.53, z=511.14], yp['Chicken'/336, l='MpServer', x=-333.83, y=68.58, z=510.84], yz['Sheep'/351, l='MpServer', x=-322.53, y=65.00, z=487.66], yn['Bat'/13086, l='MpServer', x=-278.22, y=29.57, z=487.03], yn['Bat'/5770, l='MpServer', x=-256.06, y=18.02, z=568.92], aca['Spider'/11613, l='MpServer', x=-307.50, y=70.00, z=449.50], abs['Skeleton'/5177, l='MpServer', x=-283.50, y=20.00, z=481.50], yz['Sheep'/86, l='MpServer', x=-328.72, y=69.02, z=458.84], abs['Skeleton'/83, l='MpServer', x=-324.50, y=34.02, z=441.50], yp['Chicken'/334, l='MpServer', x=-334.56, y=68.57, z=511.08], yn['Bat'/9439, l='MpServer', x=-312.25, y=16.34, z=450.55], acf['Zombie'/92, l='MpServer', x=-310.13, y=20.02, z=440.50], yp['Chicken'/335, l='MpServer', x=-334.95, y=68.55, z=510.42], yn['Bat'/5893, l='MpServer', x=-336.51, y=40.13, z=433.46], acf['Zombie'/95, l='MpServer', x=-310.00, y=15.02, z=458.41], aan['Creeper'/94, l='MpServer', x=-304.25, y=20.00, z=455.50], yz['Sheep'/333, l='MpServer', x=-324.53, y=64.02, z=480.25], aan['Creeper'/5413, l='MpServer', x=-290.50, y=15.00, z=429.50], aca['Spider'/8761, l='MpServer', x=-319.03, y=69.00, z=450.28], yn['Bat'/9432, l='MpServer', x=-317.54, y=19.04, z=448.52], aca['Spider'/8763, l='MpServer', x=-324.69, y=70.00, z=454.28], yz['Sheep'/328, l='MpServer', x=-350.59, y=64.02, z=571.31], abs['Skeleton'/11389, l='MpServer', x=-207.50, y=70.00, z=518.50], abs['Skeleton'/5252, l='MpServer', x=-353.50, y=67.00, z=481.50], abs['Skeleton'/11387, l='MpServer', x=-206.00, y=69.00, z=525.50], yn['Bat'/13240, l='MpServer', x=-262.23, y=35.16, z=475.52], abs['Skeleton'/380, l='MpServer', x=-263.16, y=45.00, z=577.41], aca['Spider'/11992, l='MpServer', x=-312.94, y=16.00, z=461.41], abs['Skeleton'/383, l='MpServer', x=-250.50, y=18.02, z=551.81], aca['Spider'/11993, l='MpServer', x=-313.50, y=15.00, z=455.50], acf['Zombie'/377, l='MpServer', x=-271.50, y=45.02, z=575.50], abs['Skeleton'/376, l='MpServer', x=-259.50, y=18.02, z=542.50], acf['Zombie'/8106, l='MpServer', x=-223.50, y=67.00, z=548.50], acf['Zombie'/4962, l='MpServer', x=-315.50, y=14.00, z=451.50], yz['Sheep'/352, l='MpServer', x=-318.44, y=63.00, z=484.34], yz['Sheep'/353, l='MpServer', x=-315.91, y=63.02, z=480.06], yz['Sheep'/354, l='MpServer', x=-306.56, y=65.02, z=486.66], abs['Skeleton'/113, l='MpServer', x=-303.31, y=20.00, z=454.97], aan['Creeper'/355, l='MpServer', x=-308.50, y=23.02, z=569.50], abs['Skeleton'/364, l='MpServer', x=-292.59, y=44.02, z=491.09], yz['Sheep'/365, l='MpServer', x=-303.56, y=63.02, z=483.78], acf['Zombie'/366, l='MpServer', x=-293.50, y=20.02, z=537.50], acf['Zombie'/12554, l='MpServer', x=-315.50, y=42.00, z=426.50], acf['Zombie'/363, l='MpServer', x=-295.47, y=40.02, z=476.91]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bxy.a(SourceFile:310)
	at blh.b(SourceFile:2133)
	at blh.a(SourceFile:317)
	at net.minecraft.client.main.Main.main(SourceFile:121)

-- System Details --
Details:
	Minecraft Version: 14w25a
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 261856584 bytes (249 MB) / 479199232 bytes (457 MB) up to 954728448 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Launched Version: 14w25a
	LWJGL: 2.9.1
	OpenGL: Intel(R) HD Graphics 3000 GL version 3.1.0 - Build 9.17.10.2867, Intel
	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.

	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)