When doing /give @p sand 1 2 the game crashed. Cannot re-enter world after item giving as it crashes.
Console:
---- Minecraft Crash Report ----
// You should try our sister game, Minceraft!

Time: 14/03/14 19:21
Description: Rendering entity in world

java.lang.ArrayIndexOutOfBoundsException: 2
at are.a(SourceFile:31)
at agp.b_(SourceFile:40)
at aga.a(SourceFile:714)
at bya.a(SourceFile:137)
at bya.a(SourceFile:32)
at bxo.a(SourceFile:219)
at bxo.a(SourceFile:199)
at bxo.a(SourceFile:176)
at btm.a(SourceFile:472)
at btf.a(SourceFile:1150)
at btf.b(SourceFile:935)
at bfr.ai(SourceFile:828)
at bfr.f(SourceFile:755)
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 are.a(SourceFile:31)
at agp.b_(SourceFile:40)
at aga.a(SourceFile:714)
at bya.a(SourceFile:137)
at bya.a(SourceFile:32)

– Entity being rendered –
Details:
Entity Type: Item (za)
Entity ID: 470407
Entity Name: item.tile.sand.default
Entity's Exact location: -668.84, 57.25, -314.25
Entity's Block location: -669.00,57.00,-315.00 - World: (-669,57,-315), Chunk: (at 3,3,5 in -42,-20; contains blocks -672,0,-320 to -657,255,-305), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
Entity's Momentum: 0.03, -0.06, 0.25
Entity's Rider: ~_ERROR~ NullPointerException: null
Entity's Vehicle: ~_ERROR~ NullPointerException: null

– Renderer details –
Details:
Assigned renderer: bya@5f369a1d
Location: -0.01,1.30,0.02 - World: (-1,1,0), Chunk: (at 15,0,0 in -1,0; contains blocks -16,0,0 to -1,255,15), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Rotation: 313.59375
Delta: 0.14453983
Stacktrace:
at bxo.a(SourceFile:219)
at bxo.a(SourceFile:199)
at bxo.a(SourceFile:176)
at btm.a(SourceFile:472)
at btf.a(SourceFile:1150)

– Affected level –
Details:
Level name: MpServer
All players: 1 total; [bsv['ArrranWeeviling'/0, l='MpServer', x=-668.86, y=56.00, z=-314.48]]
Chunk stats: MultiplayerChunkCache: 598, 598
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options:
Level spawn location: -668.00,4.00,-323.00 - World: (-668,4,-323), Chunk: (at 4,0,13 in -42,-21; contains blocks -672,0,-336 to -657,255,-321), Region: (-2,-1; contains chunks -64,-32 to -33,-1, blocks -1024,0,-512 to -513,255,-1)
Level time: 5734 game time, 5734 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: 2 total; [za['item.tile.sand.default'/470407, l='MpServer', x=-668.84, y=57.25, z=-314.25], bsv['ArrranWeeviling'/0, l='MpServer', x=-668.86, y=56.00, z=-314.48]]
Retry entities: 0 total; []
Server brand: vanilla
Server type: Integrated singleplayer server
Stacktrace:
at bqr.a(SourceFile:308)
at bfr.b(SourceFile:2069)
at bfr.f(SourceFile:764)
at net.minecraft.client.main.Main.main(SourceFile:121)

– System Details –
Details:
Minecraft Version: 14w11b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 25044808 bytes (23 MB) / 211812352 bytes (202 MB) up to 954728448 bytes (910 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
Launched Version: 14w11b
LWJGL: 2.9.1
OpenGL: ASUS EAH6670 Series GL version 4.3.12458 Compatibility Profile Context 13.200.0.0, 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.
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: [MG3D_v0.2.zip]
Current Language: English (US)
Profiler Position: N/A (disabled)
Anisotropic Filtering: On (16)

See full crash report below.