
Bug

Resolution: Fixed

Minecraft 1.4.2, Minecraft 1.4.5, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w02b, Snapshot 13w03a, Snapshot 13w04a, Snapshot 13w05a, Snapshot 13w05b, Snapshot 13w06a, Snapshot 13w09a, Snapshot 13w09b, Snapshot 13w09c, Snapshot 13w10a, Snapshot 13w10b, Minecraft 1.5

Windows 7, 64bit, Java 1.7.0_09

Community Consensus

Survival
Entered the End portal in my world and, upon loading the End, game immediately crashed. Subsequent attempts to load the world result in the client crashing before anything is loaded. Crash report is included below.
 BEGIN ERROR REPORT 710795e4  Generated 10/25/12 10:34 AM  Minecraft Version: 1.4.2  Operating System: Windows 7 (amd64) version 6.1  Java Version: 1.7.0_09, Oracle Corporation  Java VM Version: Java HotSpot(TM) 64Bit Server VM (mixed mode), Oracle Corporation  Memory: 471753064 bytes (449 MB) / 648740864 bytes (618 MB) up to 954466304 bytes (910 MB)  JVM Flags: 2 total; Xms512m Xmx1024m  AABB Pool Size: 3662 (205072 bytes; 0 MB) allocated, 3662 (205072 bytes; 0 MB) used  Is Modded: Probably not  Profiler Position: N/A (disabled)  Vec3 Pool Size: 811 (45416 bytes; 0 MB) allocated, 811 (45416 bytes; 0 MB) used  Player Count: 1 / 8; [ih['Feanarang'/5839, l='LP world?', x=100.00, y=49.00, z=0.00]]  World LP world? Entities: 88 total; [pm['Enderman'/5840, l='LP world?', x=97.18, y=35.00, z=2.98], pm['Enderman'/5841, l='LP world?', x=101.50, y=34.00, z=9.50], ih['Feanarang'/5839, l='LP world?', x=100.00, y=49.00, z=0.00], pm['Enderman'/5844, l='LP world?', x=51.41, y=57.00, z=11.96], pm['Enderman'/5846, l='LP world?', x=42.50, y=58.00, z=12.50], pm['Enderman'/5847, l='LP world?', x=24.50, y=62.00, z=21.54], pm['Enderman'/5848, l='LP world?', x=24.50, y=62.00, z=20.65], pm['Enderman'/5849, l='LP world?', x=24.50, y=63.00, z=17.84], ox['entity.EnderCrystal.name'/5850, l='LP world?', x=26.50, y=60.00, z=110.50], pm['Enderman'/5851, l='LP world?', x=14.54, y=36.00, z=87.09], pm['Enderman'/5852, l='LP world?', x=12.53, y=62.00, z=24.58], pm['Enderman'/5853, l='LP world?', x=6.95, y=59.00, z=59.92], pm['Enderman'/5854, l='LP world?', x=5.79, y=59.00, z=60.51], pm['Enderman'/5855, l='LP world?', x=4.39, y=58.00, z=65.01], pm['Enderman'/5856, l='LP world?', x=22.50, y=42.00, z=83.50], pm['Enderman'/5857, l='LP world?', x=24.50, y=52.00, z=84.50], pm['Enderman'/5858, l='LP world?', x=31.50, y=52.00, z=80.50], pm['Enderman'/5859, l='LP world?', x=40.50, y=55.00, z=88.50], pm['Enderman'/5860, l='LP world?', x=42.50, y=60.00, z=17.50], pm['Enderman'/5861, l='LP world?', x=43.34, y=60.00, z=17.32], pm['Enderman'/5862, l='LP world?', x=36.47, y=61.00, z=18.70], pm['Enderman'/5863, l='LP world?', x=38.50, y=61.00, z=16.50], pm['Enderman'/5864, l='LP world?', x=36.83, y=61.00, z=19.58], pm['Enderman'/5865, l='LP world?', x=39.50, y=61.00, z=22.50], pm['Enderman'/5866, l='LP world?', x=37.21, y=61.00, z=9.73], pm['Enderman'/5867, l='LP world?', x=43.50, y=60.00, z=14.50], pm['Enderman'/5868, l='LP world?', x=44.53, y=60.00, z=11.16], pm['Enderman'/5869, l='LP world?', x=37.87, y=61.00, z=15.46], pm['Enderman'/5870, l='LP world?', x=35.50, y=63.00, z=56.45], pm['Enderman'/5871, l='LP world?', x=61.50, y=57.00, z=79.54], pm['Enderman'/5872, l='LP world?', x=49.37, y=60.00, z=13.09], pm['Enderman'/5873, l='LP world?', x=58.42, y=59.00, z=4.22], pm['Enderman'/5874, l='LP world?', x=63.66, y=60.00, z=15.31], pm['Enderman'/5875, l='LP world?', x=61.79, y=59.00, z=0.76], pm['Enderman'/5876, l='LP world?', x=54.12, y=61.00, z=21.53], pm['Enderman'/5877, l='LP world?', x=57.03, y=61.00, z=23.60], pm['Enderman'/5878, l='LP world?', x=53.43, y=62.00, z=31.27], pm['Enderman'/5879, l='LP world?', x=60.18, y=61.00, z=33.94], pm['Enderman'/5880, l='LP world?', x=57.50, y=34.00, z=94.50], pm['Enderman'/5881, l='LP world?', x=57.72, y=34.00, z=91.49], pm['Enderman'/5882, l='LP world?', x=71.04, y=58.00, z=31.59], pm['Enderman'/5883, l='LP world?', x=72.46, y=58.00, z=31.53], pm['Enderman'/5884, l='LP world?', x=70.50, y=58.00, z=29.95], pm['Enderman'/5885, l='LP world?', x=70.48, y=58.00, z=30.79], pm['Enderman'/5886, l='LP world?', x=67.41, y=59.00, z=12.26], pm['Enderman'/5887, l='LP world?', x=78.60, y=59.00, z=5.03], pm['Enderman'/5888, l='LP world?', x=73.45, y=59.00, z=6.53], pm['Enderman'/5889, l='LP world?', x=67.07, y=59.00, z=13.12], pm['Enderman'/5890, l='LP world?', x=71.77, y=58.00, z=30.71], pm['Enderman'/5891, l='LP world?', x=70.41, y=60.00, z=16.21], pm['Enderman'/5892, l='LP world?', x=71.27, y=60.00, z=16.29], pg['item.tile.stonebrick'/5893, l='LP world?', x=100.00, y=50.09, z=0.00], pg['item.tile.stonebrick'/5894, l='LP world?', x=100.00, y=50.13, z=0.00], pm['Enderman'/5895, l='LP world?', x=77.45, y=36.00, z=52.14], pm['Enderman'/5896, l='LP world?', x=64.35, y=57.00, z=49.92], pm['Enderman'/5897, l='LP world?', x=82.66, y=54.00, z=55.89], pm['Enderman'/5898, l='LP world?', x=80.82, y=55.00, z=53.50], pm['Enderman'/5899, l='LP world?', x=82.30, y=57.00, z=44.05], pm['Enderman'/5900, l='LP world?', x=94.68, y=57.00, z=19.51], pm['Enderman'/5901, l='LP world?', x=82.60, y=59.00, z=6.54], pm['Enderman'/5902, l='LP world?', x=91.68, y=57.00, z=15.55], pm['Enderman'/5903, l='LP world?', x=88.67, y=59.92, z=0.37], pm['Enderman'/5904, l='LP world?', x=95.66, y=59.00, z=9.70], pm['Enderman'/5905, l='LP world?', x=84.38, y=39.00, z=0.18], pm['Enderman'/5906, l='LP world?', x=92.49, y=59.00, z=6.75], pm['Enderman'/5907, l='LP world?', x=81.26, y=60.00, z=9.83], pm['Enderman'/5908, l='LP world?', x=88.83, y=60.00, z=4.55], pm['Enderman'/5909, l='LP world?', x=81.17, y=60.00, z=7.81], pm['Enderman'/5910, l='LP world?', x=86.02, y=59.00, z=0.55], pm['Enderman'/5911, l='LP world?', x=85.77, y=58.00, z=26.27], pm['Enderman'/5912, l='LP world?', x=86.75, y=59.00, z=20.43], pm['Enderman'/5913, l='LP world?', x=82.18, y=59.00, z=19.34], pm['Enderman'/5914, l='LP world?', x=84.01, y=58.00, z=27.58], pm['Enderman'/5915, l='LP world?', x=81.65, y=45.00, z=44.15], pm['Enderman'/5916, l='LP world?', x=87.78, y=58.00, z=33.57], pm['Enderman'/5917, l='LP world?', x=106.33, y=57.00, z=35.10], pm['Enderman'/5918, l='LP world?', x=99.04, y=57.00, z=18.29], pm['Enderman'/5919, l='LP world?', x=106.98, y=58.00, z=17.63], pm['Enderman'/5920, l='LP world?', x=98.57, y=33.00, z=4.03], pm['Enderman'/5921, l='LP world?', x=98.43, y=59.00, z=3.51], pm['Enderman'/5922, l='LP world?', x=96.96, y=59.00, z=8.04], pm['Enderman'/5923, l='LP world?', x=97.52, y=59.00, z=7.24], pm['Enderman'/5924, l='LP world?', x=115.38, y=46.00, z=68.08], pm['Enderman'/5925, l='LP world?', x=123.27, y=46.00, z=60.39], pm['Enderman'/5926, l='LP world?', x=125.32, y=45.00, z=54.44], pm['Enderman'/5927, l='LP world?', x=125.93, y=45.00, z=60.53], pm['Enderman'/5928, l='LP world?', x=116.94, y=57.00, z=2.59], pg['item.tile.stonebrick'/5894, l='LP world?', x=100.00, y=50.13, z=0.00]]  World LP world? Players: 1 total; [ih['Feanarang'/5839, l='LP world?', x=100.00, y=49.00, z=0.00]]  World LP world? Chunk Stats: ServerChunkCache: 441 Drop: 0  Type: Integrated Server java.lang.IllegalStateException: Entity is already tracked! at hz.a(SourceFile:67) at hz.a(SourceFile:45) at ia.a(SourceFile:24) at xe.a(SourceFile:786) at ie.a(SourceFile:553) at xe.d(SourceFile:778) at ge.a(SourceFile:355) at lb.b(SourceFile:1442) at alc.a(SourceFile:62) at lb.D(SourceFile:659) at lb.d(SourceFile:622) at pg.j_(SourceFile:69) at xe.a(SourceFile:1218) at ie.a(SourceFile:424) at xe.g(SourceFile:1197) at xe.h(SourceFile:1122) at ie.h(SourceFile:352) at net.minecraft.server.MinecraftServer.r(SourceFile:718) at net.minecraft.server.MinecraftServer.q(SourceFile:661) at bcb.q(SourceFile:117) at net.minecraft.server.MinecraftServer.run(SourceFile:595) at fp.run(SourceFile:818)  END ERROR REPORT 1738cac4 
Thank you for looking into this!
EDIT:
After several attempts at entering the world, I was able to enter it successfully, spawning on the entrance platform in the End, which is where I should be. Still not sure what caused the crash in the first place.
 is duplicated by

MC5354  Minecraft Crash Report 
 Resolved

MC5508 TNT crash 1.4.6
 Resolved

MC5587 My minecraft keeps on crashing on single player
 Resolved

MC6550 crash report
 Resolved

MC6713 Minecraft crashed
 Resolved

MC7412 Minecraft Crashed
 Resolved

MC7726 Recently upgraded to 1.4.7 and game crashed
 Resolved

MC7790 Crashing
 Resolved

MC8849 Crash Adding [squid] to track, already tracked
 Resolved

MC9037 Game crashed
 Resolved

MC9083 Crashing In World
 Resolved

MC9187 Squids Crashing Game
 Resolved

MC9962 Game crashed whilst playing creative mode.
 Resolved

MC10767 Creating a new world, switching window and switching back causes crash
 Resolved

MC10791 I had more than one stick. I tried to combine them together, but then BOOM! Minecraft tells me it crashed and it told me where the crash report was
 Resolved

MC10850 Minecraft crashes due to 'Entity to track' error caused by squid
 Resolved

MC11462 Generating world  crash
 Resolved

MC11515 Crash  Exception ticking world > Entity is already tracked!
 Resolved

MC12147 crash java.lang.IllegalStateException: Entity is already tracked!
 Resolved

MC668 Server error when client joins. java.lang.IllegalStateException: Entity is already tracked!
 Resolved

MC817 Game Crash when traveling through end portal after updating to 1.4.2 after killing ender dragon in previous ver of game
 Resolved

MC1022 Server crash in single player
 Resolved

MC1447 My minecraft crashed when I entered the end. Now I can't get back, since it crashes all the times.
 Resolved

MC2058 End Crash
 Resolved

MC2438 crash while opening world
 Resolved

MC3691 games crashes while loading
 Resolved

MC4047 portal of ender bug 1.4.5
 Resolved

MC4139 minecraft crash when open map
 Resolved

MC4354 crashed minecraft with tnt. wasnt a huge amount
 Resolved

MC4485 Game crashes when entering end portal
 Resolved

MC4517 Minecraft v1.4.5 crashed while trying to destroy snow under myself
 Resolved

MC4840 Runs out of memory
 Resolved

MC5098 In a new (survival) world, inside first minute, looking around, crash.
 Resolved

MC5202 Simple Crash
 Resolved

MC5289 MC 1.4.6 Crashes While at Top of Beacon Beam
 Resolved