Confirmed for 14w25b ,not only chest and piston, ladder also have problem in my old world.
---- Minecraft Crash Report ----
// Everything's going to plan. No, really, that was supposed to happen.
Time: 6/24/14 3:26 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)
MC-58679
Confirmed for 14w25b ,not only chest and piston, ladder also have problem in my old world.