Hopper: java.lang.IndexOutOfBoundsException: Index: 55, Size: 45

To reproduce: Place double chest, hover mouse on one of the last 9 slots, press esc, then press one of the 1-9 hotkeys as fast as possible.

Bot description follows:

—

This is an automatically generated report based from the following crash: http://hopper.minecraft.net/crashes/minecraft/MCX-2531982/

Crash:

java.lang.IndexOutOfBoundsException: Index: 55, Size: 45
	at java.util.ArrayList.RangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at xi.a(SourceFile:330)
	at bda.a(SourceFile:368)
	at ayl.a(SourceFile:515)
	at ayl.a(SourceFile:528)
	at axu.l(SourceFile:428)
	at axu.p(SourceFile:396)

The following is the first clean report made public about this crash:

---- Minecraft Crash Report ----
// You're mean.

Time: 9/28/15 5:07 PM
Description: Updating screen events

java.lang.IndexOutOfBoundsException: Index: 55, Size: 45
	at java.util.ArrayList.RangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at xi.a(SourceFile:330)
	at bda.a(SourceFile:368)
	at ayl.a(SourceFile:515)
	at ayl.a(SourceFile:528)
	at axu.l(SourceFile:428)
	at axu.p(SourceFile:396)
	at ave.s(SourceFile:1498)
	at ave.av(SourceFile:889)
	at ave.a(SourceFile:325)
	at net.minecraft.client.main.Main.main(SourceFile:124)


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

-- Head --
Stacktrace:
	at java.util.ArrayList.RangeCheck(Unknown Source)
	at java.util.ArrayList.get(Unknown Source)
	at xi.a(SourceFile:330)
	at bda.a(SourceFile:368)
	at ayl.a(SourceFile:515)
	at ayl.a(SourceFile:528)
	at axu.l(SourceFile:428)
	at axu.p(SourceFile:396)

-- Affected screen --
Details:
	Screen name: ~~ERROR~~ NullPointerException: null

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bew['sharky'/319, l='MpServer', x=300.85, y=4.00, z=1014.91]]
	Chunk stats: MultiplayerChunkCache: 625, 625
	Level seed: 0
	Level generator: ID 01 - flat, ver 0. Features enabled: false
	Level generator options: 
	Level spawn location: 73.00,4.00,1071.00 - World: (73,4,1071), Chunk: (at 9,0,15 in 4,66; contains blocks 64,0,1056 to 79,255,1071), Region: (0,2; contains chunks 0,64 to 31,95, blocks 0,0,1024 to 511,255,1535)
	Level time: 1454925 game time, 284058 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: 128 total; [uo['entity.ItemFrame.name'/275, l='MpServer', x=262.97, y=5.50, z=1071.50], uo['entity.ItemFrame.name'/274, l='MpServer', x=262.97, y=4.50, z=1071.50], uo['entity.ItemFrame.name'/273, l='MpServer', x=262.97, y=4.50, z=1070.50], uo['entity.ItemFrame.name'/272, l='MpServer', x=262.97, y=4.50, z=1069.50], uo['entity.ItemFrame.name'/279, l='MpServer', x=262.97, y=6.50, z=1070.50], uo['entity.ItemFrame.name'/278, l='MpServer', x=262.97, y=6.50, z=1069.50], uo['entity.ItemFrame.name'/277, l='MpServer', x=262.97, y=5.50, z=1070.50], uo['entity.ItemFrame.name'/276, l='MpServer', x=262.97, y=5.50, z=1069.50], uo['entity.ItemFrame.name'/283, l='MpServer', x=262.50, y=4.50, z=1069.03], uo['entity.ItemFrame.name'/282, l='MpServer', x=262.50, y=5.50, z=1069.03], uo['entity.ItemFrame.name'/281, l='MpServer', x=262.50, y=6.50, z=1069.03], uo['entity.ItemFrame.name'/280, l='MpServer', x=262.97, y=6.50, z=1071.50], uo['entity.ItemFrame.name'/287, l='MpServer', x=260.50, y=6.50, z=1069.03], uo['entity.ItemFrame.name'/286, l='MpServer', x=261.50, y=4.50, z=1069.03], uo['entity.ItemFrame.name'/285, l='MpServer', x=261.50, y=5.50, z=1069.03], uo['entity.ItemFrame.name'/284, l='MpServer', x=261.50, y=6.50, z=1069.03], um['Armour Stand'/262, l='MpServer', x=234.50, y=4.00, z=980.50], tt['Pig'/263, l='MpServer', x=231.63, y=4.00, z=1050.16], um['Armour Stand'/261, l='MpServer', x=217.50, y=4.00, z=980.50], tt['Pig'/266, l='MpServer', x=231.56, y=4.00, z=1056.19], tt['Pig'/267, l='MpServer', x=234.94, y=4.00, z=1086.47], tt['Pig'/264, l='MpServer', x=235.16, y=4.00, z=1051.03], tt['Pig'/265, l='MpServer', x=231.69, y=4.00, z=1053.91], tt['Pig'/270, l='MpServer', x=233.91, y=4.00, z=1089.97], tt['Pig'/271, l='MpServer', x=244.34, y=4.00, z=1057.78], tt['Pig'/268, l='MpServer', x=231.59, y=4.00, z=1085.13], tt['Pig'/269, l='MpServer', x=231.59, y=4.00, z=1092.84], uo['entity.ItemFrame.name'/305, l='MpServer', x=260.50, y=6.50, z=1073.97], uo['entity.ItemFrame.name'/304, l='MpServer', x=261.50, y=4.50, z=1073.97], uo['entity.ItemFrame.name'/307, l='MpServer', x=260.50, y=4.50, z=1073.97], uo['entity.ItemFrame.name'/306, l='MpServer', x=260.50, y=5.50, z=1073.97], uo['entity.ItemFrame.name'/309, l='MpServer', x=259.50, y=6.50, z=1073.97], uo['entity.ItemFrame.name'/308, l='MpServer', x=259.50, y=5.50, z=1073.97], up['entity.LeashKnot.name'/311, l='MpServer', x=232.50, y=4.50, z=1050.50], uo['entity.ItemFrame.name'/310, l='MpServer', x=259.50, y=4.50, z=1073.97], up['entity.LeashKnot.name'/313, l='MpServer', x=232.50, y=4.50, z=1055.50], up['entity.LeashKnot.name'/312, l='MpServer', x=232.50, y=4.50, z=1052.50], up['entity.LeashKnot.name'/315, l='MpServer', x=232.50, y=4.50, z=1085.50], up['entity.LeashKnot.name'/314, l='MpServer', x=232.50, y=4.50, z=1057.50], up['entity.LeashKnot.name'/317, l='MpServer', x=232.50, y=4.50, z=1092.50], up['entity.LeashKnot.name'/316, l='MpServer', x=232.50, y=4.50, z=1087.50], up['entity.LeashKnot.name'/318, l='MpServer', x=232.50, y=4.50, z=1090.50], uo['entity.ItemFrame.name'/288, l='MpServer', x=260.50, y=5.50, z=1069.03], uo['entity.ItemFrame.name'/289, l='MpServer', x=260.50, y=4.50, z=1069.03], uo['entity.ItemFrame.name'/290, l='MpServer', x=259.50, y=6.50, z=1069.03], uo['entity.ItemFrame.name'/291, l='MpServer', x=259.50, y=5.50, z=1069.03], uo['entity.ItemFrame.name'/292, l='MpServer', x=259.50, y=4.50, z=1069.03], uo['entity.ItemFrame.name'/293, l='MpServer', x=262.97, y=4.50, z=1072.50], uo['entity.ItemFrame.name'/294, l='MpServer', x=262.97, y=4.50, z=1073.50], uo['entity.ItemFrame.name'/295, l='MpServer', x=262.97, y=5.50, z=1073.50], uo['entity.ItemFrame.name'/296, l='MpServer', x=262.97, y=5.50, z=1072.50], uo['entity.ItemFrame.name'/297, l='MpServer', x=262.97, y=6.50, z=1073.50], uo['entity.ItemFrame.name'/298, l='MpServer', x=262.97, y=6.50, z=1072.50], uo['entity.ItemFrame.name'/299, l='MpServer', x=262.50, y=6.50, z=1073.97], uo['entity.ItemFrame.name'/300, l='MpServer', x=262.50, y=5.50, z=1073.97], uo['entity.ItemFrame.name'/301, l='MpServer', x=262.50, y=4.50, z=1073.97], uo['entity.ItemFrame.name'/302, l='MpServer', x=261.50, y=6.50, z=1073.97], uo['entity.ItemFrame.name'/303, l='MpServer', x=261.50, y=5.50, z=1073.97], tr['Mooshroom'/343, l='MpServer', x=292.53, y=4.00, z=1018.09], uz['item.item.egg'/342, l='MpServer', x=296.03, y=4.00, z=1011.13], tr['Mooshroom'/341, l='MpServer', x=295.91, y=4.00, z=1022.63], uz['item.item.egg'/340, l='MpServer', x=292.13, y=4.00, z=1012.53], uz['item.item.egg'/339, l='MpServer', x=295.31, y=4.00, z=1017.25], tr['Mooshroom'/338, l='MpServer', x=292.87, y=4.00, z=1023.12], uz['item.item.egg'/337, l='MpServer', x=295.22, y=4.00, z=1016.25], tr['Mooshroom'/336, l='MpServer', x=294.61, y=4.00, z=1022.13], tt['Pig'/351, l='MpServer', x=294.75, y=4.00, z=1038.09], tt['Pig'/350, l='MpServer', x=292.44, y=4.00, z=1032.06], tr['Mooshroom'/349, l='MpServer', x=295.72, y=4.00, z=1025.13], tr['Mooshroom'/348, l='MpServer', x=293.68, y=4.00, z=1020.84], tr['Mooshroom'/347, l='MpServer', x=292.44, y=4.00, z=1019.00], tr['Mooshroom'/346, l='MpServer', x=295.91, y=4.00, z=1018.16], uz['item.item.egg'/345, l='MpServer', x=293.41, y=4.00, z=1013.31], tv['Sheep'/344, l='MpServer', x=303.06, y=4.00, z=1013.97], tn['Chicken'/326, l='MpServer', x=295.16, y=4.00, z=1011.94], tn['Chicken'/327, l='MpServer', x=296.16, y=4.00, z=1013.13], tn['Chicken'/324, l='MpServer', x=294.97, y=4.00, z=1012.97], tn['Chicken'/325, l='MpServer', x=296.22, y=4.00, z=1016.41], tn['Chicken'/322, l='MpServer', x=295.75, y=4.00, z=1012.13], tn['Chicken'/323, l='MpServer', x=292.84, y=4.00, z=1014.59], tn['Chicken'/320, l='MpServer', x=293.38, y=4.00, z=1016.19], tn['Chicken'/321, l='MpServer', x=292.44, y=4.00, z=1016.09], tn['Chicken'/334, l='MpServer', x=296.25, y=4.00, z=1011.50], tn['Chicken'/335, l='MpServer', x=294.56, y=4.00, z=1011.19], tn['Chicken'/332, l='MpServer', x=295.72, y=4.00, z=1011.19], tn['Chicken'/333, l='MpServer', x=293.06, y=4.00, z=1015.22], tn['Chicken'/330, l='MpServer', x=293.78, y=4.00, z=1012.78], tn['Chicken'/331, l='MpServer', x=296.25, y=4.00, z=1017.25], tn['Chicken'/328, l='MpServer', x=294.03, y=4.00, z=1015.78], tn['Chicken'/329, l='MpServer', x=295.38, y=4.00, z=1016.56], tu['Rabbit'/373, l='MpServer', x=304.00, y=4.00, z=1041.00], to['Cow'/372, l='MpServer', x=296.13, y=4.00, z=1041.97], tu['Rabbit'/375, l='MpServer', x=302.91, y=4.00, z=1040.47], tu['Rabbit'/374, l='MpServer', x=303.28, y=4.00, z=1043.97], to['Cow'/369, l='MpServer', x=293.59, y=4.00, z=1040.06], to['Cow'/368, l='MpServer', x=294.63, y=4.00, z=1045.50], tu['Rabbit'/371, l='MpServer', x=302.91, y=4.00, z=1041.34], to['Cow'/370, l='MpServer', x=292.44, y=4.00, z=1041.25], tv['Sheep'/381, l='MpServer', x=306.19, y=4.00, z=1014.23], tv['Sheep'/380, l='MpServer', x=303.92, y=4.00, z=1012.64], tu['Rabbit'/383, l='MpServer', x=306.55, y=4.00, z=1041.54], tv['Sheep'/382, l='MpServer', x=303.06, y=4.00, z=1015.19], tv['Sheep'/377, l='MpServer', x=305.75, y=4.00, z=1016.31], tu['Rabbit'/376, l='MpServer', x=305.64, y=4.18, z=1040.95], tv['Sheep'/379, l='MpServer', x=305.06, y=4.00, z=1011.56], tv['Sheep'/378, l='MpServer', x=303.06, y=4.00, z=1011.44], tt['Pig'/356, l='MpServer', x=295.91, y=4.00, z=1033.18], tt['Pig'/357, l='MpServer', x=295.91, y=4.00, z=1038.91], tt['Pig'/358, l='MpServer', x=295.91, y=4.00, z=1032.06], tt['Pig'/359, l='MpServer', x=295.91, y=4.00, z=1037.72], tt['Pig'/352, l='MpServer', x=294.78, y=4.00, z=1032.06], tt['Pig'/353, l='MpServer', x=294.27, y=4.00, z=1033.34], tt['Pig'/354, l='MpServer', x=292.22, y=4.00, z=1037.91], tt['Pig'/355, l='MpServer', x=293.06, y=4.00, z=1038.81], tr['Mooshroom'/364, l='MpServer', x=295.91, y=4.00, z=1021.35], tr['Mooshroom'/365, l='MpServer', x=287.81, y=4.00, z=1021.16], to['Cow'/366, l='MpServer', x=293.00, y=4.00, z=1044.84], to['Cow'/367, l='MpServer', x=295.91, y=4.00, z=1044.75], tt['Pig'/360, l='MpServer', x=295.55, y=4.00, z=1034.25], tt['Pig'/361, l='MpServer', x=293.50, y=4.00, z=1032.06], tt['Pig'/362, l='MpServer', x=293.22, y=4.00, z=1035.28], tu['Rabbit'/363, l='MpServer', x=302.97, y=4.00, z=1039.75], tu['Rabbit'/387, l='MpServer', x=306.63, y=4.00, z=1044.78], tu['Rabbit'/386, l='MpServer', x=304.06, y=4.00, z=1045.56], tu['Rabbit'/385, l='MpServer', x=306.50, y=4.00, z=1039.91], tu['Rabbit'/384, l='MpServer', x=304.06, y=4.00, z=1044.69], tu['Rabbit'/388, l='MpServer', x=303.79, y=4.13, z=1039.91], bew['sharky'/319, l='MpServer', x=300.85, y=4.00, z=1014.91]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at bdb.a(SourceFile:309)
	at ave.b(SourceFile:2311)
	at ave.a(SourceFile:334)
	at net.minecraft.client.main.Main.main(SourceFile:124)

-- System Details --
Details:
	Minecraft Version: 1.8.8
	Operating System: Windows 7 (amd64) version 6.1
	Java Version: 1.6.0_27, Sun Microsystems Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
	Memory: 141813704 bytes (135 MB) / 336240640 bytes (320 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
	IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
	Launched Version: 1.8.8
	LWJGL: 2.9.4
	OpenGL: ATI Radeon HD 4200 GL version 2.1.8870, 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.
VBOs are available because OpenGL 1.5 is supported.

	Using VBOs: No
	Is Modded: Probably not. Jar signature remains and client brand is untouched.
	Type: Client (map_client.txt)
	Resource Packs: 
	Current Language: English (UK)
	Profiler Position: N/A (disabled)
	CPU: 2x AMD Athlon(tm) II X2 250 Processor

You can see this full report at http://hopper.minecraft.net/crashes/minecraft/MCX-2531982/75082201/