I are playing in a Server and opened my chest and the game was Crashed.
Here the report:

---- Minecraft Crash Report ----
// Why did you do that?

Time: 1/03/15 03:16 PM
Description: Updating screen events

java.lang.IndexOutOfBoundsException: Index: 70, Size: 45
at java.util.ArrayList.rangeCheck(Unknown Source)
at java.util.ArrayList.get(Unknown Source)
at ahy.a(SourceFile:298)
at cel.a(SourceFile:368)
at byk.a(SourceFile:515)
at byk.b(SourceFile:539)
at byk.a(SourceFile:524)
at bxe.l(SourceFile:420)
at bxe.p(SourceFile:388)
at bss.r(SourceFile:1480)
at bss.at(SourceFile:880)
at bss.a(SourceFile:317)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

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 ahy.a(SourceFile:298)
at cel.a(SourceFile:368)
at byk.a(SourceFile:515)
at byk.b(SourceFile:539)
at byk.a(SourceFile:524)
at bxe.l(SourceFile:420)
at bxe.p(SourceFile:388)

– Affected screen –
Details:
Screen name: ~_ERROR~ NullPointerException: null

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [cin['ArtutoGamer'/24482, l='MpServer', x=-60.70, y=69.00, z=-434.83]]
Chunk stats: MultiplayerChunkCache: 121, 121
Level seed: 0
Level generator: ID 00 - default, ver 1. Features enabled: false
Level generator options:
Level spawn location: -35.00,74.00,-26.00 - World: (-35,74,-26), Chunk: (at 13,4,6 in -3,-2; contains blocks -48,0,-32 to -33,255,-17), Region: (-1,-1; contains chunks -32,-32 to -1,-1, blocks -512,0,-512 to -1,255,-1)
Level time: 121845185 game time, 122533726 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: survival (ID 0). Hardcore: false. Cheats: false
Forced entities: 12 total; [aeq['Creeper'/7091719, l='MpServer', x=-48.79, y=64.00, z=-465.18], abu['Chicken'/7080045, l='MpServer', x=-93.13, y=64.00, z=-418.30], afv['Skeleton'/7092060, l='MpServer', x=-71.50, y=68.00, z=-458.50], adx['item.item.egg'/7090025, l='MpServer', x=-78.75, y=64.00, z=-412.00], afv['Skeleton'/7090954, l='MpServer', x=-78.50, y=20.00, z=-437.50], acm['Sheep'/7089627, l='MpServer', x=-94.35, y=73.00, z=-445.89], acm['Sheep'/7089626, l='MpServer', x=-83.36, y=68.00, z=-469.98], afv['Skeleton'/7090955, l='MpServer', x=-80.50, y=20.00, z=-437.50], afv['Skeleton'/7090952, l='MpServer', x=-80.50, y=20.00, z=-438.50], acm['Sheep'/7089625, l='MpServer', x=-82.19, y=66.00, z=-460.28], afv['Skeleton'/7090953, l='MpServer', x=-79.50, y=20.00, z=-437.50], cin['ArtutoGamer'/24482, l='MpServer', x=-60.70, y=69.00, z=-434.83]]
Retry entities: 0 total; []
Server brand: BungeeCord (git:BungeeCord-Bootstrap:1.8-SNAPSHOT:"2b49358":1045) <- Spigot
Server type: Non-integrated multiplayer server
Stacktrace:
at cem.a(WorldClient.java:399)
at bss.b(SourceFile:2278)
at bss.a(SourceFile:326)
at net.minecraft.client.main.Main.main(SourceFile:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at net.minecraft.launchwrapper.Launch.launch(Launch.java:131)
at net.minecraft.launchwrapper.Launch.main(Launch.java:27)

– System Details –
Details:
Minecraft Version: 1.8.1
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_75, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 176509024 bytes (168 MB) / 598192128 bytes (570 MB) up to 1454637056 bytes (1387 MB)
JVM Flags: 6 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1400M -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:-UseAdaptiveSizePolicy -Xmn128M
IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
Launched Version: 1.8.1-OptiFine_HD_U_B6
LWJGL: 2.9.1
OpenGL: AMD Radeon HD 6320 Graphics GL version 4.1.11079 Compatibility Profile Context, ATI Technologies Inc.
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: No
Is Modded: Very likely; Jar signature invalidated
Type: Client (map_client.txt)
Resource Packs: [[1.8]_R3D.CRAFT_SR-128x_v0.2.0.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)

Thanks.