public ContentException( DesignElement element, int slotID, DesignElement content, String errCode )
public ContentException( DesignElement element, int slotID, String errCode )
	public ContentException( DesignElement element, int slotID,			DesignElement content, String errCode )	{		super( element, errCode );		slot = slotID;		this.content = content;	}