Crash Report

// Everything's going to plan. No, really, that was supposed to happen.

Time: 7/9/14 11:33 PM
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot get property bcl{name=age, clazz=class java.lang.Integer, values=[0, 1, 2, 3, 4, 5, 6, 7]} as it does not exist!
	at bbw.b(SourceFile:91)
	at ayt.b(SourceFile:127)
	at ayt.c(SourceFile:69)
	at ary.b(SourceFile:416)
	at qg.h(SourceFile:373)
	at qg.c(SourceFile:199)
	at net.minecraft.server.MinecraftServer.x(SourceFile:578)
	at net.minecraft.server.MinecraftServer.w(SourceFile:510)
	at cwg.w(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:426)
	at java.lang.Thread.run(Unknown Source)


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

-- Head --
Stacktrace:
	at bbw.b(SourceFile:91)
	at ayt.b(SourceFile:127)
	at ayt.c(SourceFile:69)
	at ary.b(SourceFile:416)
	at qg.h(SourceFile:373)
	at qg.c(SourceFile:199)

-- Affected level --
Details:
	Level name: Ian and Sean's  Adventure
	All players: 1 total; [qj['JRR_Strokin'/89, l='Ian and Sean's  Adventure', x=125.30, y=73.00, z=-39.46]]
	Chunk stats: ServerChunkCache: 1607 Drop: 0
	Level seed: 7749084672589329108
	Level generator: ID 00 - default, ver 1. Features enabled: true
	Level generator options:
	Level spawn location: -385.00,64.00,509.00 - World: (-385,64,509), Chunk: (at 15,4,13 in -25,31; contains blocks -400,0,496 to -385,255,511), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
	Level time: 93 game time, 93 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 83352 (now: false), thunder time: 55179 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.x(SourceFile:578)
	at net.minecraft.server.MinecraftServer.w(SourceFile:510)
	at cwg.w(SourceFile:132)
	at net.minecraft.server.MinecraftServer.run(SourceFile:426)
	at java.lang.Thread.run(Unknown Source)

-- System Details --
Details:
	Minecraft Version: 14w28a
	Operating System: Windows 8 (amd64) version 6.2
	Java Version: 1.7.0_25, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 393708000 bytes (375 MB) / 644808704 bytes (614 MB) up to 954466304 bytes (910 MB)
	JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx1G
	IntCache: cache: 0, tcache: 0, allocated: 12, tallocated: 94
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [qj['JRR_Strokin'/89, l='Ian and Sean's  Adventure', x=125.30, y=73.00, z=-39.46]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.