Hopper: java.lang.ClassCastException: <unknown> cannot be cast to blg

java.lang.ClassCastException: <unknown> cannot be cast to blg
	at bls.a(SourceFile:1209)
	at bll.a(SourceFile:949)

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 25.10.2013 17:27
Description: Unexpected error

java.lang.ClassCastException: <unknown> cannot be cast to blg
	at bls.a(SourceFile:1209)
	at bll.a(SourceFile:949)
	at bll.b(SourceFile:813)
	at azd.ad(SourceFile:780)
	at azd.e(SourceFile:704)
	at net.minecraft.client.main.Main.main(SourceFile:103)


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

-- Head --
Stacktrace:
	at bls.a(SourceFile:1209)
	at bll.a(SourceFile:949)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bje['Alper'/135, l='MpServer', x=893,56, y=91,36, z=19,14]]
	Chunk stats: MultiplayerChunkCache: 255, 255
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (-132,64,100), Chunk: (at 12,4,4 in -9,6; contains blocks -144,0,96 to -129,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 6513 game time, 6513 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: creative (ID 1). Hardcore: false. Cheats: false
	Forced entities: 158 total; [wx['İskelet'/274, l='MpServer', x=874,38, y=21,00, z=-61,66], vy['entity.MinecartChest.name'/279, l='MpServer', x=883,50, y=13,50, z=-50,50], xc['Zombi'/283, l='MpServer', x=883,50, y=18,00, z=-53,50], wx['İskelet'/286, l='MpServer', x=888,50, y=18,00, z=-61,50], wx['İskelet'/285, l='MpServer', x=883,50, y=18,00, z=-55,50], wx['İskelet'/284, l='MpServer', x=884,50, y=18,00, z=-55,50], vw['item.tile.rail'/258, l='MpServer', x=868,88, y=13,13, z=11,22], vw['item.tile.rail'/259, l='MpServer', x=870,06, y=13,13, z=11,97], ut['İnek'/256, l='MpServer', x=867,13, y=69,00, z=-13,22], vw['item.tile.rail'/257, l='MpServer', x=867,19, y=13,13, z=13,88], uq['Yarasa'/262, l='MpServer', x=866,38, y=35,95, z=9,41], uq['Yarasa'/263, l='MpServer', x=864,88, y=37,04, z=8,91], vw['item.tile.rail'/260, l='MpServer', x=866,16, y=13,13, z=13,88], wz['Örümcek'/261, l='MpServer', x=864,66, y=37,00, z=5,66], wl['Creeper'/266, l='MpServer', x=884,50, y=28,00, z=35,66], ut['İnek'/267, l='MpServer', x=874,88, y=83,00, z=67,16], xc['Zombi'/264, l='MpServer', x=862,53, y=45,00, z=27,06], wx['İskelet'/265, l='MpServer', x=877,38, y=38,00, z=21,91], ut['İnek'/268, l='MpServer', x=878,72, y=80,00, z=75,78], ut['İnek'/269, l='MpServer', x=878,72, y=81,00, z=69,66], wl['Creeper'/305, l='MpServer', x=888,50, y=42,00, z=30,50], wl['Creeper'/304, l='MpServer', x=887,50, y=44,00, z=23,50], wx['İskelet'/307, l='MpServer', x=881,34, y=32,00, z=17,13], wx['İskelet'/306, l='MpServer', x=891,53, y=42,00, z=24,53], wl['Creeper'/309, l='MpServer', x=878,84, y=28,00, z=30,34], wl['Creeper'/308, l='MpServer', x=896,30, y=65,00, z=20,70], wl['Creeper'/311, l='MpServer', x=883,34, y=28,00, z=32,53], wl['Creeper'/310, l='MpServer', x=883,31, y=28,00, z=36,47], ut['İnek'/313, l='MpServer', x=893,91, y=76,00, z=38,97], wx['İskelet'/312, l='MpServer', x=880,50, y=37,00, z=32,50], ut['İnek'/315, l='MpServer', x=894,50, y=83,00, z=61,72], ut['İnek'/314, l='MpServer', x=888,50, y=78,00, z=48,50], ut['İnek'/317, l='MpServer', x=885,47, y=83,00, z=55,47], ut['İnek'/316, l='MpServer', x=884,47, y=83,00, z=54,47], ut['İnek'/318, l='MpServer', x=892,50, y=81,00, z=57,50], xc['Zombi'/288, l='MpServer', x=894,03, y=36,00, z=-59,50], vw['item.tile.rail'/289, l='MpServer', x=892,84, y=11,13, z=-43,53], vw['item.tile.torch'/290, l='MpServer', x=883,88, y=20,13, z=-19,47], vw['item.item.string'/291, l='MpServer', x=888,88, y=20,13, z=-26,56], vw['item.tile.rail'/292, l='MpServer', x=884,28, y=19,13, z=-26,06], vw['item.tile.rail'/293, l='MpServer', x=883,28, y=19,13, z=-26,13], vw['item.tile.rail'/294, l='MpServer', x=888,38, y=20,13, z=-27,50], wl['Creeper'/295, l='MpServer', x=887,50, y=21,00, z=-29,50], xc['Zombi'/296, l='MpServer', x=888,94, y=31,00, z=-22,41], uq['Yarasa'/297, l='MpServer', x=887,31, y=67,20, z=-20,28], vw['item.tile.torch'/298, l='MpServer', x=889,66, y=30,13, z=-8,13], wl['Creeper'/299, l='MpServer', x=882,50, y=26,00, z=-4,50], wl['Creeper'/300, l='MpServer', x=884,50, y=26,00, z=-4,50], wz['Örümcek'/301, l='MpServer', x=894,00, y=61,00, z=-6,63], vw['item.tile.torch'/302, l='MpServer', x=889,25, y=30,13, z=7,34], wl['Creeper'/303, l='MpServer', x=885,03, y=28,00, z=24,63], vw['item.item.enchantedBook'/343, l='MpServer', x=903,97, y=29,13, z=-4,63], vw['item.item.sulphur'/342, l='MpServer', x=903,13, y=29,13, z=-3,88], vw['item.item.record'/341, l='MpServer', x=902,88, y=29,13, z=-3,94], vw['item.item.bucket'/340, l='MpServer', x=904,47, y=29,13, z=-4,09], vw['item.item.bread'/339, l='MpServer', x=904,72, y=29,13, z=-3,75], vw['item.item.redstone'/338, l='MpServer', x=903,94, y=29,13, z=-4,94], vy['entity.MinecartChest.name'/337, l='MpServer', x=900,50, y=25,50, z=-14,50], vw['item.tile.rail'/336, l='MpServer', x=904,78, y=10,13, z=-28,13], vw['item.tile.torch'/351, l='MpServer', x=904,41, y=31,13, z=37,94], vw['item.tile.rail'/350, l='MpServer', x=906,41, y=29,13, z=38,25], vw['item.tile.rail'/349, l='MpServer', x=911,50, y=31,13, z=38,72], wx['İskelet'/348, l='MpServer', x=899,50, y=45,00, z=24,50], wl['Creeper'/347, l='MpServer', x=900,50, y=27,00, z=18,50], vy['entity.MinecartChest.name'/346, l='MpServer', x=904,50, y=31,50, z=23,50], vw['item.item.ingotIron'/345, l='MpServer', x=904,28, y=29,13, z=-4,28], vw['item.item.horsearmorgold'/344, l='MpServer', x=904,56, y=29,13, z=-5,16], wx['İskelet'/334, l='MpServer', x=913,50, y=17,00, z=-31,69], vy['entity.MinecartChest.name'/335, l='MpServer', x=905,50, y=10,34, z=-28,50], vy['entity.MinecartChest.name'/332, l='MpServer', x=905,50, y=14,50, z=-48,50], wx['İskelet'/333, l='MpServer', x=910,50, y=14,00, z=-44,50], xc['Zombi'/373, l='MpServer', x=913,94, y=14,00, z=-50,66], wx['İskelet'/372, l='MpServer', x=918,28, y=14,00, z=-49,13], wx['İskelet'/375, l='MpServer', x=917,50, y=14,00, z=-41,94], wx['İskelet'/371, l='MpServer', x=917,50, y=14,00, z=-57,50], vy['entity.MinecartChest.name'/381, l='MpServer', x=925,50, y=30,50, z=-16,50], xc['Zombi'/380, l='MpServer', x=913,53, y=42,00, z=-36,03], xc['Zombi'/383, l='MpServer', x=926,50, y=44,00, z=-27,06], wz['Örümcek'/382, l='MpServer', x=912,50, y=30,00, z=-27,50], xc['Zombi'/377, l='MpServer', x=926,50, y=26,00, z=-42,50], xc['Zombi'/379, l='MpServer', x=916,50, y=27,00, z=-47,06], xc['Zombi'/378, l='MpServer', x=921,50, y=19,00, z=-35,50], ut['İnek'/352, l='MpServer', x=893,03, y=72,00, z=27,03], ut['İnek'/353, l='MpServer', x=900,88, y=75,00, z=33,44], ut['İnek'/354, l='MpServer', x=911,97, y=67,00, z=80,16], uq['Yarasa'/137, l='MpServer', x=906,97, y=27,26, z=8,91], uq['Yarasa'/136, l='MpServer', x=901,06, y=30,07, z=5,56], wx['İskelet'/408, l='MpServer', x=948,50, y=31,00, z=20,88], uq['Yarasa'/139, l='MpServer', x=902,91, y=26,07, z=3,09], va['Domuz'/409, l='MpServer', x=939,25, y=65,00, z=84,34], uq['Yarasa'/138, l='MpServer', x=904,63, y=31,10, z=10,75], wl['Creeper'/141, l='MpServer', x=910,47, y=49,00, z=9,03], wl['Creeper'/140, l='MpServer', x=896,63, y=65,00, z=19,84], wm['Enderman'/143, l='MpServer', x=909,41, y=51,00, z=12,44], xc['Zombi'/142, l='MpServer', x=902,97, y=52,00, z=9,63], wm['Enderman'/403, l='MpServer', x=930,56, y=18,00, z=-7,38], wx['İskelet'/406, l='MpServer', x=934,50, y=30,00, z=20,50], wx['İskelet'/407, l='MpServer', x=937,50, y=29,00, z=20,50], ut['İnek'/404, l='MpServer', x=942,16, y=70,00, z=-1,03], ut['İnek'/405, l='MpServer', x=944,03, y=69,00, z=7,13], ut['İnek'/395, l='MpServer', x=920,94, y=66,00, z=83,94], wz['Örümcek'/394, l='MpServer', x=926,81, y=45,00, z=71,16], wx['İskelet'/393, l='MpServer', x=925,00, y=44,00, z=69,72], wx['İskelet'/392, l='MpServer', x=922,72, y=31,00, z=22,28], ut['İnek'/397, l='MpServer', x=914,28, y=67,00, z=91,53], ut['İnek'/396, l='MpServer', x=917,22, y=66,00, z=81,25], wl['Creeper'/387, l='MpServer', x=913,50, y=19,00, z=-11,50], xc['Zombi'/386, l='MpServer', x=917,50, y=18,00, z=-11,50], vw['item.tile.rail'/385, l='MpServer', x=917,16, y=14,13, z=-15,78], wm['Enderman'/384, l='MpServer', x=918,78, y=43,00, z=-24,88], wx['İskelet'/391, l='MpServer', x=925,50, y=30,00, z=16,50], wx['İskelet'/390, l='MpServer', x=918,44, y=30,00, z=10,94], wl['Creeper'/389, l='MpServer', x=919,50, y=25,00, z=7,50], vw['item.tile.torch'/388, l='MpServer', x=919,19, y=30,13, z=11,22], va['Domuz'/424, l='MpServer', x=946,00, y=65,00, z=85,19], bje['Alper'/135, l='MpServer', x=893,56, y=91,36, z=19,14], wx['İskelet'/417, l='MpServer', x=954,72, y=15,00, z=7,28], uq['Yarasa'/416, l='MpServer', x=940,91, y=26,10, z=-56,38], xc['Zombi'/419, l='MpServer', x=958,59, y=15,00, z=12,00], xc['Zombi'/418, l='MpServer', x=955,69, y=15,00, z=6,31], uq['Yarasa'/421, l='MpServer', x=945,81, y=62,10, z=11,69], wz['Örümcek'/420, l='MpServer', x=950,19, y=14,59, z=10,25], ut['İnek'/423, l='MpServer', x=947,19, y=69,00, z=4,38], ut['İnek'/422, l='MpServer', x=948,53, y=69,00, z=4,38], ut['İnek'/207, l='MpServer', x=825,22, y=63,00, z=-52,28], ut['İnek'/220, l='MpServer', x=836,50, y=64,00, z=-15,50], ut['İnek'/221, l='MpServer', x=836,31, y=82,00, z=70,88], ut['İnek'/222, l='MpServer', x=837,53, y=82,00, z=71,53], ut['İnek'/216, l='MpServer', x=831,56, y=84,00, z=75,50], vy['entity.MinecartChest.name'/217, l='MpServer', x=839,50, y=13,50, z=-16,50], ut['İnek'/218, l='MpServer', x=834,50, y=67,00, z=-16,50], ut['İnek'/219, l='MpServer', x=837,50, y=71,00, z=-17,50], vb['Koyun'/212, l='MpServer', x=827,50, y=69,00, z=17,81], vb['Koyun'/213, l='MpServer', x=826,84, y=70,00, z=35,84], vb['Koyun'/214, l='MpServer', x=818,50, y=69,00, z=17,66], ut['İnek'/215, l='MpServer', x=830,38, y=83,00, z=75,53], ut['İnek'/208, l='MpServer', x=819,66, y=64,00, z=-51,63], ut['İnek'/209, l='MpServer', x=820,31, y=64,00, z=-52,81], ut['İnek'/210, l='MpServer', x=824,78, y=65,00, z=-60,78], vb['Koyun'/211, l='MpServer', x=829,81, y=69,00, z=14,31], ut['İnek'/239, l='MpServer', x=862,47, y=83,00, z=58,47], vy['entity.MinecartChest.name'/238, l='MpServer', x=854,50, y=19,50, z=6,50], ut['İnek'/237, l='MpServer', x=848,31, y=76,00, z=-16,53], uq['Yarasa'/236, l='MpServer', x=850,72, y=18,10, z=-42,31], wl['Creeper'/235, l='MpServer', x=849,50, y=18,00, z=-43,50], uq['Yarasa'/234, l='MpServer', x=840,72, y=18,42, z=-39,53], uq['Yarasa'/233, l='MpServer', x=863,63, y=18,85, z=-37,66], uq['Yarasa'/232, l='MpServer', x=865,92, y=20,17, z=-42,19], vy['entity.MinecartChest.name'/231, l='MpServer', x=860,50, y=19,50, z=-38,50], ut['İnek'/254, l='MpServer', x=866,47, y=68,00, z=-14,53], ut['İnek'/255, l='MpServer', x=874,06, y=69,00, z=-6,09], wl['Creeper'/252, l='MpServer', x=867,50, y=19,00, z=-0,50], ut['İnek'/253, l='MpServer', x=869,56, y=69,00, z=-13,47], xc['Zombi'/250, l='MpServer', x=874,66, y=25,00, z=-29,03], wl['Creeper'/251, l='MpServer', x=868,50, y=19,00, z=-0,50], xc['Zombi'/249, l='MpServer', x=875,50, y=21,00, z=-35,50], wx['İskelet'/246, l='MpServer', x=875,50, y=21,00, z=-59,50], wx['İskelet'/247, l='MpServer', x=873,31, y=21,00, z=-61,31]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at biz.a(SourceFile:284)
	at azd.b(SourceFile:1951)
	at azd.e(SourceFile:718)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 1.7.2
	Operating System: Windows 7 (x86) version 6.1
	Java Version: 1.7.0_45, Oracle Corporation
	Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
	Memory: 44797048 bytes (42 MB) / 188882944 bytes (180 MB) up to 518979584 bytes (494 MB)
	JVM Flags: 1 total; -Xmx512M
	AABB Pool Size: 8591 (481096 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
	IntCache: cache: 1, tcache: 1, allocated: 12, tallocated: 94
	Launched Version: 1.7.2
	LWJGL: 2.9.0
	OpenGL: ATI Radeon HD 2600 PRO GL version 3.3.11672 Compatibility Profile Context, ATI Technologies Inc.
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: []
	Current Language: Türkçe (TR)
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 1718 (96208 bytes; 0 MB) allocated, 32 (1792 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)