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    java.lang.NullPointerException: Ticking block entity
        at buildcraft.factory.TileRefinery.func_145845_h(TileRefinery.java:106)
        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)
    4 frames hidden