1. Get In Spectator Mode
2. Press 2 on the keyboard to show the little GUI menu in spectator
3. Select Teleport To Team Member With The # 2 On Your Keyboard
4. Get Crashed D: LIKA BOSS!!
---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!
Time: 6/24/14 8:47 AM
Description: Unexpected error
java.lang.ArrayIndexOutOfBoundsException: -1
at bmm.b(SourceFile:705)
at bvd.a(SourceFile:113)
at bob.a(SourceFile:104)
at bob.a(SourceFile:86)
at bob.a(SourceFile:66)
at bmn.a(SourceFile:136)
at cco.b(SourceFile:957)
at blj.ap(SourceFile:886)
at blj.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 bmm.b(SourceFile:705)
at bvd.a(SourceFile:113)
at bob.a(SourceFile:104)
at bob.a(SourceFile:86)
at bob.a(SourceFile:66)
at bmn.a(SourceFile:136)
-- Affected level --
Details:
Level name: MpServer
All players: 2 total; [cby['creepycrawler77'/1179278, l='MpServer', x=-16.93, y=68.31, z=-11.79], cbz['SERRANO2013'/1179282, l='MpServer', x=11.94, y=69.00, z=-8.25]]
Chunk stats: MultiplayerChunkCache: 49, 49
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -3.00,69.00,-9.00 - World: (-3,69,-9), Chunk: (at 13,4,7 in -1,-1; contains blocks -16,0,-16 to -1,255,-1), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 16942670 game time, 33811 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: 7 total; [adb['arrow'/1178566, l='MpServer', x=13.78, y=68.97, z=6.06], cbz['SERRANO2013'/1179282, l='MpServer', x=11.94, y=69.00, z=-8.25], adb['arrow'/1179279, l='MpServer', x=-16.88, y=69.03, z=-8.75], adb['arrow'/1179281, l='MpServer', x=-18.06, y=69.03, z=-12.09], adb['arrow'/1179280, l='MpServer', x=-16.78, y=68.03, z=-12.28], cby['creepycrawler77'/1179278, l='MpServer', x=-16.93, y=68.31, z=-11.79], cbz['SERRANO2013'/1179282, l='MpServer', x=11.94, y=69.00, z=-8.25]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Non-integrated multiplayer server
Stacktrace:
at bya.a(SourceFile:310)
at blj.b(SourceFile:2134)
at blj.a(SourceFile:317)
at net.minecraft.client.main.Main.main(SourceFile:121)
-- System Details --
Details:
Minecraft Version: 14w25b
Operating System: Mac OS X (x86_64) version 10.6.8
Java Version: 1.6.0_65, Apple Inc.
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
Memory: 183530544 bytes (175 MB) / 297549824 bytes (283 MB) up to 532545536 bytes (507 MB)
JVM Flags: 1 total; -Xmx512M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 14w25b
LWJGL: 2.9.1
OpenGL: ATI Radeon HD 2400 XT OpenGL Engine GL version 2.1 ATI-1.6.36, ATI Technologies Inc.
GL Caps: Using GL 1.3 multitexturing.
Using GL 1.3 texture combiners.
Using framebuffer objects because ARB_framebuffer_object 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)
---- Minecraft Crash Report ----
// Shall we play a game?
Time: 8/28/14 1:39 PM
Description: Unexpected error
java.lang.ArrayIndexOutOfBoundsException: -1
at btw.b(SourceFile:706)
at cba.a(SourceFile:114)
at bvm.a(SourceFile:103)
at bvm.a(SourceFile:85)
at bvm.a(SourceFile:65)
at btx.a(SourceFile:140)
at cjg.b(SourceFile:1002)
at bss.as(SourceFile:903)
at bss.a(SourceFile:314)
at net.minecraft.client.main.Main.main(SourceFile:120)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at btw.b(SourceFile:706)
at cba.a(SourceFile:114)
at bvm.a(SourceFile:103)
at bvm.a(SourceFile:85)
at bvm.a(SourceFile:65)
at btx.a(SourceFile:140)
-- Affected level --
Details:
Level name: MpServer
All players: 1 total; [cim['veubeke'/84, l='MpServer', x=97.21, y=243.14, z=258.16]]
Chunk stats: MultiplayerChunkCache: 441, 441
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: 121.00,213.00,262.00 - World: (121,213,262), Chunk: (at 9,13,6 in 7,16; contains blocks 112,0,256 to 127,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 2091748 game time, 2091748 day time
Level dimension: 0
Level storage version: 0x00000 - Unknown?
Level weather: Rain time: 0 (now: true), thunder time: 0 (now: false)
Level game mode: Game mode: spectator (ID 3). Hardcore: false. Cheats: false
Forced entities: 36 total; [cim['veubeke'/84, l='MpServer', x=97.21, y=243.14, z=258.16], aee['entity.MinecartRideable.name'/5, l='MpServer', x=72.92, y=19.06, z=322.55], aee['entity.MinecartRideable.name'/6, l='MpServer', x=72.92, y=19.06, z=322.55], aee['entity.MinecartRideable.name'/7, l='MpServer', x=76.50, y=19.06, z=311.67], aee['entity.MinecartRideable.name'/8, l='MpServer', x=76.99, y=19.06, z=324.53], aee['entity.MinecartRideable.name'/9, l='MpServer', x=55.70, y=19.06, z=306.57], abx['Mooshroom'/12, l='MpServer', x=94.16, y=175.00, z=264.81], abx['Mooshroom'/13, l='MpServer', x=91.94, y=176.00, z=280.84], abx['Mooshroom'/14, l='MpServer', x=93.84, y=176.00, z=282.81], aee['entity.MinecartRideable.name'/15, l='MpServer', x=67.05, y=19.06, z=299.12], aee['entity.MinecartRideable.name'/17, l='MpServer', x=112.31, y=158.06, z=255.79], aee['entity.MinecartRideable.name'/16, l='MpServer', x=118.75, y=158.06, z=258.90], aee['entity.MinecartRideable.name'/19, l='MpServer', x=115.68, y=158.06, z=260.49], aee['entity.MinecartRideable.name'/18, l='MpServer', x=112.76, y=158.06, z=260.30], aee['entity.MinecartRideable.name'/21, l='MpServer', x=117.52, y=158.06, z=260.37], aee['entity.MinecartRideable.name'/20, l='MpServer', x=112.53, y=158.06, z=258.33], adi['entity.ItemFrame.name'/23, l='MpServer', x=139.97, y=8.50, z=219.50], adi['entity.ItemFrame.name'/22, l='MpServer', x=142.50, y=9.50, z=218.97], adi['entity.ItemFrame.name'/25, l='MpServer', x=142.50, y=8.50, z=216.97], adi['entity.ItemFrame.name'/24, l='MpServer', x=140.50, y=8.50, z=218.97], adi['entity.ItemFrame.name'/27, l='MpServer', x=141.97, y=8.50, z=217.50], adg['Armor Stand'/26, l='MpServer', x=135.50, y=11.00, z=219.50], adi['entity.ItemFrame.name'/29, l='MpServer', x=142.97, y=9.50, z=217.50], adg['Armor Stand'/28, l='MpServer', x=135.50, y=11.00, z=211.50], adi['entity.ItemFrame.name'/31, l='MpServer', x=141.50, y=8.50, z=217.97], adi['entity.ItemFrame.name'/30, l='MpServer', x=140.97, y=8.50, z=218.50], abx['Mooshroom'/34, l='MpServer', x=150.69, y=180.00, z=281.53], abx['Mooshroom'/35, l='MpServer', x=149.72, y=180.00, z=280.34], adi['entity.ItemFrame.name'/32, l='MpServer', x=143.50, y=8.50, z=216.97], abx['Mooshroom'/33, l='MpServer', x=130.53, y=185.00, z=238.72], adi['entity.ItemFrame.name'/42, l='MpServer', x=215.03, y=26.50, z=255.50], adi['entity.ItemFrame.name'/43, l='MpServer', x=215.03, y=25.50, z=255.50], adi['entity.ItemFrame.name'/46, l='MpServer', x=215.03, y=26.50, z=256.50], adi['entity.ItemFrame.name'/47, l='MpServer', x=215.03, y=25.50, z=257.50], adi['entity.ItemFrame.name'/44, l='MpServer', x=215.03, y=25.50, z=256.50], adi['entity.ItemFrame.name'/45, l='MpServer', x=215.03, y=26.50, z=257.50]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Non-integrated multiplayer server
Stacktrace:
at cel.a(SourceFile:308)
at bss.b(SourceFile:2252)
at bss.a(SourceFile:328)
at net.minecraft.client.main.Main.main(SourceFile:120)
-- System Details --
Details:
Minecraft Version: 1.8-pre3
Operating System: Linux (amd64) version 3.13.0-34-generic
Java Version: 1.7.0_17, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 353977904 bytes (337 MB) / 830603264 bytes (792 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 1 total; -Xmx2G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.8-pre3
LWJGL: 2.9.1
OpenGL: Mesa DRI Intel(R) Ivybridge Mobile GL version 3.0 Mesa 10.1.3, Intel Open Source Technology Center
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.
VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes
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)
---- Minecraft Crash Report ----
// Ooh. Shiny.
Time: 9/4/14 9:18 AM
Description: Unexpected error
java.lang.ArrayIndexOutOfBoundsException: -1
at bty.b(SourceFile:706)
at cbc.a(SourceFile:114)
at bvo.a(SourceFile:103)
at bvo.a(SourceFile:85)
at bvo.a(SourceFile:65)
at btz.a(SourceFile:140)
at cji.b(SourceFile:1002)
at bsu.as(SourceFile:903)
at bsu.a(SourceFile:314)
at net.minecraft.client.main.Main.main(SourceFile:120)
A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------
-- Head --
Stacktrace:
at bty.b(SourceFile:706)
at cbc.a(SourceFile:114)
at bvo.a(SourceFile:103)
at bvo.a(SourceFile:85)
at bvo.a(SourceFile:65)
at btz.a(SourceFile:140)
-- Affected level --
Details:
Level name: MpServer
All players: 5 total; [cio['veubeke'/532215, l='MpServer', x=114.58, y=220.61, z=242.10], cip['Atomicwars'/142360, l='MpServer', x=156.00, y=205.50, z=270.19], cip['stevanwj'/504285, l='MpServer', x=116.50, y=62.69, z=237.59], cip['JetslowmoMC'/48569, l='MpServer', x=158.75, y=36.00, z=220.44], cip['Dragon_Holmes'/503911, l='MpServer', x=114.03, y=61.84, z=301.19]]
Chunk stats: MultiplayerChunkCache: 361, 361
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: 121.00,213.00,262.00 - World: (121,213,262), Chunk: (at 9,13,6 in 7,16; contains blocks 112,0,256 to 127,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 11775114 game time, 1195629 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: spectator (ID 3). Hardcore: false. Cheats: false
Forced entities: 40 total; [cio['veubeke'/532215, l='MpServer', x=114.58, y=220.61, z=242.10], adk['entity.ItemFrame.name'/64, l='MpServer', x=139.97, y=8.50, z=219.50], adk['entity.ItemFrame.name'/65, l='MpServer', x=140.50, y=8.50, z=218.97], adk['entity.ItemFrame.name'/66, l='MpServer', x=142.50, y=8.50, z=216.97], adi['Armor Stand'/67, l='MpServer', x=135.50, y=11.00, z=219.50], adk['entity.ItemFrame.name'/68, l='MpServer', x=141.97, y=8.50, z=217.50], adi['Armor Stand'/69, l='MpServer', x=135.50, y=11.00, z=211.50], adk['entity.ItemFrame.name'/70, l='MpServer', x=142.97, y=9.50, z=217.50], adk['entity.ItemFrame.name'/71, l='MpServer', x=140.97, y=8.50, z=218.50], adk['entity.ItemFrame.name'/72, l='MpServer', x=141.50, y=8.50, z=217.97], adk['entity.ItemFrame.name'/73, l='MpServer', x=143.50, y=8.50, z=216.97], cip['Atomicwars'/142360, l='MpServer', x=156.00, y=205.50, z=270.19], cip['stevanwj'/504285, l='MpServer', x=116.50, y=62.69, z=237.59], abx['Mooshroom'/77, l='MpServer', x=109.59, y=177.00, z=295.53], abx['Mooshroom'/78, l='MpServer', x=114.72, y=177.00, z=291.63], abo['Bat'/526236, l='MpServer', x=131.28, y=7.47, z=245.75], abo['Bat'/526238, l='MpServer', x=118.34, y=14.00, z=248.47], cip['JetslowmoMC'/48569, l='MpServer', x=158.75, y=36.00, z=220.44], cip['Atomicwars'/142360, l='MpServer', x=156.00, y=205.50, z=270.19], cip['stevanwj'/504285, l='MpServer', x=116.50, y=62.69, z=237.59], abo['Bat'/528979, l='MpServer', x=165.63, y=4.97, z=212.31], cip['Dragon_Holmes'/503911, l='MpServer', x=114.03, y=61.84, z=301.19], cip['Dragon_Holmes'/503911, l='MpServer', x=114.03, y=61.84, z=301.19], aeg['entity.MinecartRideable.name'/41, l='MpServer', x=49.09, y=10.06, z=323.56], aeg['entity.MinecartRideable.name'/42, l='MpServer', x=83.84, y=10.06, z=316.59], aeg['entity.MinecartRideable.name'/44, l='MpServer', x=76.09, y=10.06, z=316.81], aeg['entity.MinecartRideable.name'/45, l='MpServer', x=67.75, y=10.06, z=316.13], aeg['entity.MinecartRideable.name'/46, l='MpServer', x=89.31, y=10.06, z=319.81], abx['Mooshroom'/50, l='MpServer', x=97.63, y=175.00, z=248.38], abx['Mooshroom'/51, l='MpServer', x=89.88, y=174.00, z=248.13], abx['Mooshroom'/52, l='MpServer', x=87.91, y=175.00, z=271.16], aeg['entity.MinecartRideable.name'/55, l='MpServer', x=113.00, y=158.06, z=254.75], aeg['entity.MinecartRideable.name'/56, l='MpServer', x=112.88, y=158.06, z=256.78], aeg['entity.MinecartRideable.name'/57, l='MpServer', x=112.78, y=158.06, z=258.59], cip['JetslowmoMC'/48569, l='MpServer', x=158.75, y=36.00, z=220.44], aeg['entity.MinecartRideable.name'/58, l='MpServer', x=112.84, y=158.06, z=260.13], aeg['entity.MinecartRideable.name'/59, l='MpServer', x=116.91, y=158.06, z=260.28], aeg['entity.MinecartRideable.name'/60, l='MpServer', x=115.50, y=158.06, z=260.28], abx['Mooshroom'/61, l='MpServer', x=133.69, y=179.00, z=295.53], adk['entity.ItemFrame.name'/63, l='MpServer', x=142.50, y=9.50, z=218.97]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Non-integrated multiplayer server
Stacktrace:
at cen.a(SourceFile:308)
at bsu.b(SourceFile:2252)
at bsu.a(SourceFile:328)
at net.minecraft.client.main.Main.main(SourceFile:120)
-- System Details --
Details:
Minecraft Version: 1.8
Operating System: Linux (amd64) version 3.13.0-34-generic
Java Version: 1.8.0_20, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 192487896 bytes (183 MB) / 657457152 bytes (627 MB) up to 1908932608 bytes (1820 MB)
JVM Flags: 1 total; -Xmx2G
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.8
LWJGL: 2.9.1
OpenGL: Mesa DRI Intel(R) Ivybridge Mobile GL version 3.0 Mesa 10.1.3, Intel Open Source Technology Center
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.
VBOs are available because OpenGL 1.5 is supported.
Using VBOs: Yes
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)
Linked issues
Attachments
Comments
Try in multiplayer
I do not have a multiplayer server to confirm this, someone else will have to.
fixed in 14w26b
Can confirm in pre-release 2. It crashes my client every time and I reported it through that system.
Crash in pre-release 2.
Crash report for pre-release 3.

@Arne König: I made you the reporter of the issue, since you are keeping an eye on the issue.
@Original Reporter: If you want to have this ticket back and want to keep it uptodate yourself, leave a comment here, and I can give it back to you.
Yo @Galaxy_2Alex if you scroll up in the comments it says fixed in 14w26a.... plz give back reporter perms? i will update everything sry D:
Someone else has confirmed that its still occuring in 1.8-pre.
It's still in the 1.8 release.
No I Cannot Confirm It. Spectator Mode Does Work With TP in 1.8 Official Release. Maybe Make A Video And Show The Crash?
This is not fixed. It's happening to me and several others every single time and I posted 3 crash reports. Can someone from Mojang at least look at the crash reports before this is dismissed?

@@unknown: Your Java version ancient! Please update your Java to the latest version (1.7.0_67 / 1.8.0_20): http://www.java.com/en/download/.
ya try that. if it fixes it in java version 1.7 then maybe i will put Spectator Mode Does Not Work For Old Pre 1.7Java Versions. But First Update
Updated crash report for Minecraft 1.8 with Java 8. Here's a video of the crash: https://www.youtube.com/watch?v=U7fpavDwiYg

Ok, reopened.
Confirmed in 1.8.2-pre2.
http://hopper.minecraft.net/crashes/minecraft/MCX-2547706/
Steps to reproduce in 15w34d:
1. Enter a single-player world
2. /gamemode 3
3. Press a number key to open the hotbar
4. Press 2
5. Press 2
again, and the game will crash

Cannot reproduce.
Is this still an issue for you in the most recent versions (i.e. 1.10.2, or 16w42a) of Minecraft?
Can't reproduce using @unknown 's solution in 16w42a
I cannot confirm this. Also, incomplete without crash report.