I'm not sure how you have your server setup but if you forgot to set a download mask on the template files then they would appear in the logs whenever someone downloads them, but even if you did that I don't think you should ever see the log Requested GET /hfslive/images/errors/ because that mean the user (malicious or otherwise) is trying to get the contents of your hfslive folder. I suggest you set your hfslive folder to not be browsable,make it hidden, put a download mask on it and to make it not appear in the logs. That way whenever people download the images from the template it won't clutter up your logs, people won't be able to see the hfslive folder and they won't be able to browse it.