---- Minecraft Crash Report ----
// I'm sorry, Dave.

Time: 6/23/14 7:41 PM
Description: Exception ticking world

java.lang.IllegalArgumentException: Cannot set property ayl

{name=facing, clazz=class dt, values=[north, south, west, east]}

to down on block minecraft:ladder, it is not an allowed value
at aya.a(SourceFile:131)
at arn.a(SourceFile:127)
at ou.h(SourceFile:342)
at ou.c(SourceFile:179)
at net.minecraft.server.MinecraftServer.w(SourceFile:570)
at net.minecraft.server.MinecraftServer.v(SourceFile:506)
at coe.v(SourceFile:132)
at net.minecraft.server.MinecraftServer.run(SourceFile:422)
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 aya.a(SourceFile:131)
at arn.a(SourceFile:127)
at ou.h(SourceFile:342)
at ou.c(SourceFile:179)

– Affected level –
Details:
Level name: world
All players: 1 total; [ox['LLS123'/262, l='world', x=25.66, y=79.03, z=82.08]]
Chunk stats: ServerChunkCache: 1154 Drop: 0
Level seed: -1828500946434745820
Level generator: ID 00 - default, ver 1. Features enabled: true
Level generator options:
Level spawn location: 21.00,64.00,96.00 - World: (21,64,96), Chunk: (at 5,4,0 in 1,6; contains blocks 16,0,96 to 31,255,111), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
Level time: 13056217 game time, 2247774 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 36698 (now: false), thunder time: 85870 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: false
Stacktrace:
at net.minecraft.server.MinecraftServer.w(SourceFile:570)
at net.minecraft.server.MinecraftServer.v(SourceFile:506)
at coe.v(SourceFile:132)
at net.minecraft.server.MinecraftServer.run(SourceFile:422)
at java.lang.Thread.run(Unknown Source)

– System Details –
Details:
Minecraft Version: 14w25b
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.7.0_60, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 123559128 bytes (117 MB) / 1261961216 bytes (1203 MB) up to 4772069376 bytes (4551 MB)
JVM Flags: 2 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx5G
IntCache: cache: 5, tcache: 0, allocated: 13, tallocated: 95
Profiler Position: N/A (disabled)
Player Count: 1 / 8; [ox['LLS123'/262, l='world', x=25.66, y=79.03, z=82.08]]
Type: Integrated Server (map_client.txt)
Is Modded: Probably not. Jar signature remains and both client + server brands are untouched.