Hopper: java.lang.ClassCastException: dr cannot be cast to de

java.lang.ClassCastException: dr cannot be cast to de
	at de.m(SourceFile:203)

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 10/11/13 3:59 PM
Description: Reading NBT data

java.lang.ClassCastException: dr cannot be cast to de
	at de.m(SourceFile:203)
	at ze.b(SourceFile:168)
	at ze.a(SourceFile:135)
	at bkw.a(SourceFile:219)
	at bkr.b(SourceFile:593)
	at bkr.a(SourceFile:1078)
	at bkr.b(SourceFile:814)
	at ayp.ab(SourceFile:783)
	at ayp.e(SourceFile:706)
	at net.minecraft.client.main.Main.main(SourceFile:103)


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

-- Head --
Stacktrace:
	at de.m(SourceFile:203)

-- Corrupt NBT tag --
Details:
	Tag type found: STRING
	Tag type expected: COMPOUND
	Tag name: display
Stacktrace:
	at de.m(SourceFile:203)
	at ze.b(SourceFile:168)
	at ze.a(SourceFile:135)
	at bkw.a(SourceFile:219)
	at bkr.b(SourceFile:593)
	at bkr.a(SourceFile:1078)

-- Affected level --
Details:
	Level name: MpServer
	All players: 1 total; [bil['This_is_false'/112, l='MpServer', x=-92.01, y=77.13, z=-52.44]]
	Chunk stats: MultiplayerChunkCache: 0, 0
	Level seed: 0
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (210,64,228), Chunk: (at 2,4,4 in 13,14; contains blocks 208,0,224 to 223,255,239), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 1428965 game time, 13000 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: 1 total; [bil['This_is_false'/112, l='MpServer', x=-92.01, y=77.13, z=-52.44]]
	Retry entities: 0 total; []
	Server brand: vanilla
	Server type: Integrated singleplayer server
Stacktrace:
	at big.a(SourceFile:302)
	at ayp.b(SourceFile:1935)
	at ayp.e(SourceFile:715)
	at net.minecraft.client.main.Main.main(SourceFile:103)

-- System Details --
Details:
	Minecraft Version: 13w41b
	Operating System: Mac OS X (x86_64) version 10.8.5
	Java Version: 1.6.0_51, Apple Inc.
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Apple Inc.
	Memory: 88120528 bytes (84 MB) / 192643072 bytes (183 MB) up to 1060372480 bytes (1011 MB)
	JVM Flags: 1 total; -Xmx1G
	AABB Pool Size: 17299 (968744 bytes; 0 MB) allocated, 3698 (207088 bytes; 0 MB) used
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Launched Version: 13w41b
	LWJGL: 2.9.0
	OpenGL: AMD Radeon HD 6750M OpenGL Engine GL version 2.1 ATI-1.8.19, ATI Technologies Inc.
	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)
	Vec3 Pool Size: 168 (9408 bytes; 0 MB) allocated, 168 (9408 bytes; 0 MB) used
	Anisotropic Filtering: Off (1)