---- Minecraft Crash Report ----
// Oops.

Time: 23/02/14 8:58 PM
Description: Unexpected error

java.lang.IllegalStateException: Already tesselating!
at bna.a(SourceFile:159)
at bmt.a(SourceFile:859)
at bmm.a(SourceFile:941)
at bmm.b(SourceFile:814)
at azi.ah(SourceFile:787)
at azi.f(SourceFile:711)
at net.minecraft.client.main.Main.main(SourceFile:152)

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

– Head –
Stacktrace:
at bna.a(SourceFile:159)
at bmt.a(SourceFile:859)
at bmm.a(SourceFile:941)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bkf['superherocam'/360668, l='MpServer', x=283.68, y=70.57, z=326.63]]
Chunk stats: MultiplayerChunkCache: 1063, 1063
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: World: (180,64,256), Chunk: (at 4,4,0 in 11,16; contains blocks 176,0,256 to 191,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 48673 game time, 12309 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: 83 total; [xh['Zombie'/361086, l='MpServer', x=278.50, y=64.00, z=280.50], xh['Zombie'/361087, l='MpServer', x=277.50, y=64.00, z=278.50], wq['Creeper'/361080, l='MpServer', x=347.50, y=61.00, z=313.50], wq['Creeper'/360520, l='MpServer', x=226.25, y=21.00, z=357.84], vf['Pig'/360525, l='MpServer', x=226.91, y=66.00, z=251.13], xc['Skeleton'/360526, l='MpServer', x=230.50, y=43.00, z=274.50], xg['Witch'/361061, l='MpServer', x=355.50, y=20.00, z=315.50], xg['Witch'/361060, l='MpServer', x=356.50, y=20.00, z=316.50], vf['Pig'/360517, l='MpServer', x=210.56, y=71.00, z=299.38], vf['Pig'/360516, l='MpServer', x=209.47, y=71.00, z=298.44], vf['Pig'/360518, l='MpServer', x=210.94, y=71.00, z=293.78], xc['Skeleton'/360570, l='MpServer', x=284.13, y=56.00, z=321.56], xh['Zombie'/360571, l='MpServer', x=282.56, y=58.00, z=348.13], uv['Bat'/360568, l='MpServer', x=276.33, y=39.00, z=310.34], uv['Bat'/360569, l='MpServer', x=276.81, y=38.09, z=298.59], ux['Chicken'/360574, l='MpServer', x=272.44, y=62.48, z=396.56], ux['Chicken'/360572, l='MpServer', x=278.63, y=63.00, z=365.41], ux['Chicken'/360573, l='MpServer', x=287.59, y=65.00, z=382.47], xh['Zombie'/360563, l='MpServer', x=282.50, y=49.00, z=282.50], xc['Skeleton'/360566, l='MpServer', x=274.50, y=39.00, z=310.50], xc['Skeleton'/360567, l='MpServer', x=274.50, y=39.00, z=306.50], xh['Zombie'/360564, l='MpServer', x=274.28, y=50.00, z=279.47], xc['Skeleton'/360565, l='MpServer', x=274.50, y=39.00, z=309.50], wq['Creeper'/360555, l='MpServer', x=256.50, y=26.00, z=397.00], xc['Skeleton'/361001, l='MpServer', x=276.50, y=39.00, z=310.50], xc['Skeleton'/361000, l='MpServer', x=277.66, y=39.00, z=308.97], xe['Spider'/360998, l='MpServer', x=276.09, y=39.00, z=307.09], wq['Creeper'/360969, l='MpServer', x=321.91, y=61.00, z=299.66], wq['Creeper'/360970, l='MpServer', x=329.03, y=65.00, z=282.56], xc['Skeleton'/360657, l='MpServer', x=362.88, y=41.00, z=320.44], xh['Zombie'/360656, l='MpServer', x=363.50, y=41.00, z=319.50], xh['Zombie'/360658, l='MpServer', x=359.50, y=15.00, z=337.50], xh['Zombie'/360640, l='MpServer', x=345.50, y=60.00, z=316.50], xh['Zombie'/360642, l='MpServer', x=343.75, y=20.00, z=326.38], vj['Squid'/360646, l='MpServer', x=344.97, y=48.28, z=356.50], vj['Squid'/360648, l='MpServer', x=346.84, y=51.35, z=354.03], xh['Zombie'/360652, l='MpServer', x=363.50, y=40.00, z=269.50], xc['Skeleton'/360655, l='MpServer', x=359.50, y=60.00, z=300.50], uv['Bat'/360933, l='MpServer', x=320.50, y=43.74, z=294.65], uv['Bat'/360940, l='MpServer', x=339.18, y=48.85, z=287.51], uv['Bat'/360941, l='MpServer', x=331.75, y=46.05, z=288.66], uv['Bat'/360942, l='MpServer', x=340.34, y=49.00, z=282.31], uv['Bat'/360943, l='MpServer', x=337.72, y=49.10, z=287.66], bkf['superherocam'/360668, l='MpServer', x=283.68, y=70.57, z=326.63], vf['Pig'/360593, l='MpServer', x=314.50, y=78.00, z=285.31], xh['Zombie'/360592, l='MpServer', x=319.50, y=29.00, z=285.50], xh['Zombie'/360595, l='MpServer', x=298.87, y=56.00, z=334.87], vf['Pig'/360594, l='MpServer', x=311.31, y=76.00, z=290.50], xh['Zombie'/360580, l='MpServer', x=302.09, y=52.00, z=303.59], xh['Zombie'/360581, l='MpServer', x=288.56, y=57.00, z=321.13], vf['Pig'/360582, l='MpServer', x=302.50, y=74.00, z=296.31], xc['Skeleton'/360852, l='MpServer', x=304.50, y=36.00, z=323.50], xc['Skeleton'/360851, l='MpServer', x=306.50, y=36.00, z=322.50], uv['Bat'/360579, l='MpServer', x=296.70, y=37.86, z=319.11], xc['Skeleton'/360862, l='MpServer', x=339.94, y=49.00, z=283.53], vf['Pig'/360591, l='MpServer', x=320.75, y=82.00, z=263.09], uv['Bat'/360585, l='MpServer', x=304.38, y=45.57, z=372.75], ux['Chicken'/360586, l='MpServer', x=303.19, y=63.00, z=377.91], wb['item.item.egg'/360587, l='MpServer', x=303.97, y=63.13, z=386.44], wq['Creeper'/360630, l='MpServer', x=334.50, y=41.00, z=336.50], wq['Creeper'/360628, l='MpServer', x=325.06, y=58.00, z=318.72], wq['Creeper'/360627, l='MpServer', x=326.41, y=57.00, z=313.00], wq['Creeper'/360626, l='MpServer', x=321.56, y=58.00, z=306.56], wq['Creeper'/360625, l='MpServer', x=321.50, y=61.00, z=300.94], wq['Creeper'/360624, l='MpServer', x=324.50, y=60.00, z=300.50], xh['Zombie'/360639, l='MpServer', x=350.00, y=27.00, z=289.56], wq['Creeper'/360873, l='MpServer', x=247.50, y=51.00, z=395.31], xc['Skeleton'/360633, l='MpServer', x=324.50, y=24.00, z=402.50], vj['Squid'/360632, l='MpServer', x=319.72, y=50.34, z=370.88], wq['Creeper'/361088, l='MpServer', x=280.50, y=64.00, z=279.50], vf['Pig'/360614, l='MpServer', x=331.53, y=77.00, z=272.31], wq['Creeper'/361089, l='MpServer', x=276.00, y=64.00, z=280.47], vf['Pig'/360615, l='MpServer', x=326.06, y=80.00, z=276.50], vf['Pig'/360613, l='MpServer', x=324.47, y=79.00, z=277.47], vf['Pig'/360611, l='MpServer', x=332.03, y=75.33, z=266.56], wq['Creeper'/360608, l='MpServer', x=323.50, y=43.00, z=267.50], xc['Skeleton'/360609, l='MpServer', x=332.50, y=43.00, z=257.81], wq['Creeper'/360622, l='MpServer', x=324.56, y=43.00, z=291.34], xh['Zombie'/360623, l='MpServer', x=325.50, y=62.00, z=297.50], xc['Skeleton'/360895, l='MpServer', x=337.50, y=26.00, z=368.50], xe['Spider'/360621, l='MpServer', x=327.53, y=27.00, z=300.16], wq['Creeper'/360619, l='MpServer', x=328.78, y=27.00, z=297.22], wq['Creeper'/360616, l='MpServer', x=315.31, y=27.00, z=287.50]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Non-integrated multiplayer server
Stacktrace:
at bka.a(SourceFile:289)
at azi.b(SourceFile:1952)
at azi.f(SourceFile:725)
at net.minecraft.client.main.Main.main(SourceFile:152)

– System Details –
Details:
Minecraft Version: 1.7.4
Operating System: Windows 7 (x86) version 6.1
Java Version: 1.7.0_11, Oracle Corporation
Java VM Version: Java HotSpot(TM) Client VM (mixed mode, sharing), Oracle Corporation
Memory: 9204384 bytes (8 MB) / 518979584 bytes (494 MB) up to 518979584 bytes (494 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx512M
AABB Pool Size: 2 (112 bytes; 0 MB) allocated, 2 (112 bytes; 0 MB) used
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.7.4
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6550D GL version 4.1.10834 Compatibility Profile Context, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using framebuffer objects because OpenGL 3.0 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: English (US)
Profiler Position: N/A (disabled)
Vec3 Pool Size: 26 (1456 bytes; 0 MB) allocated, 26 (1456 bytes; 0 MB) used
Anisotropic Filtering: Off (1)