ID Crash

When I typed /give whitebradcam 160, it crashed the game. Right before it crashes, red text comes up in chat saying there was an unexpected error and then 1 second later it crashes.

---- Minecraft Crash Report ----
// Quite honestly, I wouldn't worry myself about that.

Time: 9/29/13 12:07 PM
Description: Adding item to inventory

java.lang.NullPointerException
	at zi.g(SourceFile:151)
	at zi.i(SourceFile:171)
	at vd.a(SourceFile:234)
	at tq.b_(SourceFile:199)
	at vf.r(SourceFile:436)
	at vf.e(SourceFile:428)
	at pb.h(SourceFile:1194)
	at vf.h(SourceFile:211)
	at kq.i(SourceFile:204)
	at kv.a(SourceFile:201)
	at gs.a(SourceFile:136)
	at eb.b(SourceFile:63)
	at kv.e(SourceFile:69)
	at ky.b(SourceFile:40)
	at box.b(SourceFile:83)
	at net.minecraft.server.MinecraftServer.u(SourceFile:494)
	at net.minecraft.server.MinecraftServer.t(SourceFile:411)
	at bou.t(SourceFile:121)
	at net.minecraft.server.MinecraftServer.run(SourceFile:346)
	at jc.run(SourceFile:582)


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

-- Head --
Stacktrace:
	at zi.g(SourceFile:151)
	at zi.i(SourceFile:171)

-- Item being added --
Details:
	Item ID: 0
	Item data: 0
	Item name: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at vd.a(SourceFile:234)
	at tq.b_(SourceFile:199)
	at vf.r(SourceFile:436)
	at vf.e(SourceFile:428)
	at pb.h(SourceFile:1194)
	at vf.h(SourceFile:211)

-- Player being ticked --
Details:
	Entity Type: null (kq)
	Entity ID: 83
	Entity Name: whitebradcam
	Entity's Exact location: 57.50, 69.04, 256.50
	Entity's Block location: World: (57,69,256), Chunk: (at 9,4,0 in 3,16; contains blocks 48,0,256 to 63,255,271), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0.00, 0.00, 0.00
Stacktrace:
	at kq.i(SourceFile:204)
	at kv.a(SourceFile:201)
	at gs.a(SourceFile:136)
	at eb.b(SourceFile:63)
	at kv.e(SourceFile:69)

-- Ticking connection --
Details:
	Connection: kv@4660a77c
Stacktrace:
	at ky.b(SourceFile:40)
	at box.b(SourceFile:83)
	at net.minecraft.server.MinecraftServer.u(SourceFile:494)
	at net.minecraft.server.MinecraftServer.t(SourceFile:411)
	at bou.t(SourceFile:121)
	at net.minecraft.server.MinecraftServer.run(SourceFile:346)
	at jc.run(SourceFile:582)

-- System Details --
Details:
	Minecraft Version: 13w39b
	Operating System: Mac OS X (x86_64) version 10.7.5
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 54844960 bytes (52 MB) / 179322880 bytes (171 MB) up to 1065025536 bytes (1015 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 4646 (260176 bytes; 0 MB) allocated, 1923 (107688 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	Profiler Position: N/A (disabled)
	Vec3 Pool Size: 5678 (317968 bytes; 0 MB) allocated, 4593 (257208 bytes; 0 MB) used
	Player Count: 1 / 8; [kq['whitebradcam'/83, l='13w39b', x=57.50, y=69.04, z=256.50]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.