J’ai suivie le tuto pour mettre une texture Techn a un block tous fonctionne sauf au moment ou je pose le block au sol sa crash est me rapport la ligne

at fr.darkvince.ultrav2.cassefauchon.TileEntityCasseFauchon.writeToNBT(TileEntityCasseFauchon.java:24) ~[TileEntityCasseFauchon.class:?]

    @Override
    public void writeToNBT(NBTTagCompound compound)
    {
       super.writeToNBT(compound); //ligne 24
        compound.setByte("Direction", this.direction);
    }

La classe complète

package fr.darkvince.ultrav2.cassefauchon;

import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.network.NetworkManager;
import net.minecraft.network.Packet;
import net.minecraft.network.play.server.S35PacketUpdateTileEntity;
import net.minecraft.tileentity.TileEntity;

public class TileEntityCasseFauchon extends TileEntity {

    private byte direction;

    @Override
    public void readFromNBT(NBTTagCompound compound)
    {
        super.readFromNBT(compound);
        this.direction = compound.getByte("Direction");
    }

    @Override
    public void writeToNBT(NBTTagCompound compound)
    {
       super.writeToNBT(compound);
        compound.setByte("Direction", this.direction);
    }

    public byte getDirection()
    {
        return direction;
    }

    public void setDirection(byte direction)
    {
        this.direction = direction;
        this.worldObj.markBlockForUpdate(this.xCoord, this.yCoord, this.zCoord);
    }

    public Packet getDescriptionPacket()
    {
        NBTTagCompound nbttagcompound = new NBTTagCompound();
        this.writeToNBT(nbttagcompound);
        return new S35PacketUpdateTileEntity(this.xCoord, this.yCoord, this.zCoord, 0, nbttagcompound);
    }

    public void onDataPacket(NetworkManager net, S35PacketUpdateTileEntity pkt)
    {
        this.readFromNBT(pkt.func_148857_g());
        this.worldObj.markBlockRangeForRenderUpdate(this.xCoord, this.yCoord, this.zCoord, this.xCoord, this.yCoord, this.zCoord);
    }

}