The core of the problem lies with the heir to the throne: Prince William has drawn a hard line.The Prince of Wales is looking at the long-term survival of the institution, and he views the events of recent years as a profound breach of trust that cannot be hugged out for the cameras.The King is torn between his role as sovereign, where protecting the reputation of the crown must always come first, and his private role as a father.When candles are blown out at Highgrove House today, the atmosphere will inevitably carry some melancholy.