update link 404

Yep that is the correct link. The link added to the Whats New help info is no good obviously. The link in the Update Notice is good.

I just added a redirect rule on the forum site so that the bad link now redirects to the right place. Thanks for catching that. 🙂

I assume you mean the 2 new Custom Code text boxes?
CUSTOM CODE TURN OFF YOUR SERVER SIGNATURE
CUSTOM CODE DENY ACCESS TO PROTECTED SERVER FILES AND FOLDERS

The Server Signature directive is either an On or Off thing. ie either you leave it as is or you comment it out to allow the Server Signature.

You could add additional protected server folders to this code.
By default the code protects .htaccess files, .htpasswd files, a folder named .errordocs and a folder named .logs. If you have other or different protected server folders that start with a dot then you would copy this entire section of htaccess code from your root htaccess file and then modify it.

# DENY ACCESS TO PROTECTED SERVER FILES AND FOLDERS
# Use BPS Custom Code to modify/edit/change this code and to save it permanently.
# Files and folders starting with a dot: .htaccess, .htpasswd, .errordocs, .logs
RedirectMatch 403 \.(htaccess|htpasswd|errordocs|logs)$

Example: let’s say i do not have a folder named .logs, but i do have a protected server folders called .gumby and .zippy. I would make these modifications to the code in Custom Code, save it and activate root folder bulletproof mode.
Note: the protected server folders MUST start with a dot (.) since that is what this rule protects by default.

# DENY ACCESS TO PROTECTED SERVER FILES AND FOLDERS
# Use BPS Custom Code to modify/edit/change this code and to save it permanently.
# Files and folders starting with a dot: .htaccess, .htpasswd, .errordocs, .logs
RedirectMatch 403 \.(htaccess|htpasswd|errordocs|gumby|zippy)$

Yep perfect!

that is a Core Dump file. It is pretty much the same thing as a Windows dump file. ie a system malfunction occurred and the dump file is created for debugging purposes. It is perfectly fine to delete. if the problem happens a lot then that could indicate a major software or hardware problem so keep your eye on that.
http://en.wikipedia.org/wiki/Core_dump#Core_dump_files
http://www.unixguide.net/linux/faq/07.13.shtml
http://linux.die.net/man/5/core

You got Kudos in the .51.3 Changelog. Thanks again.
https://ww.wp.xz.cn/plugins/bulletproof-security/changelog/