1. Place filler and power it
2. Filler is working and doing something
3. Start changing filler setting
4. Crash https://gist.githubusercontent.com/the-vindex/50f2466461c90211e261/raw/bd68b691187075e629b4392b04fbc90bc73a5fb8/fml.log

Not directly casued by buildcraft. Ask whoever owns the package "me.exz.wailanbt" which I assume is WAILA as this is caused by a scripting mysconfiguation.

*incorrect stack trace removed*

I'm referring to this: Description: Ticking block entity

java.lang.NullPointerException: Ticking block entity
at buildcraft.core.builders.BuildingItem.build(BuildingItem.java:186)
at buildcraft.core.builders.BuildingItem.update(BuildingItem.java:140)
at buildcraft.core.builders.TileAbstractBuilder.func_145845_h(TileAbstractBuilder.java:103)
at buildcraft.builders.TileFiller.func_145845_h(TileFiller.java:105)
at net.minecraft.world.World.func_72939_s(World.java:1939)
at net.minecraft.world.WorldServer.func_72939_s(WorldServer.java:489)
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:636)
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:547)
at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:111)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:427)
at net.minecraft.server.MinecraftServer$2.run(MinecraftServer.java:685)

Sorry! Ok that is our fault then :)

Quarry crash: http://pastebin.com/CVDRKAQy

Technically a duplicate of #3157, can you try the JAR file I have put there?