Update: A new Uploads Anti-Exploit Guard (UAEG) Read Me First Sticky Topic has been created in the link below.
http://forum.ait-pro.com/forums/topic/uploads-anti-exploit-guard-uaeg-read-me-first/
The Uploads Anti-Exploit Guard (UAEG) can be enabled by going to B-Core Security Modes page and scrolling down to…
Activate Uploads Folder htaccess Security Mode
This is typically enabled/activated by default, but there was a period in an earlier version of BulletProof Security Pro where I was advising some folks to turn off/deactivate UAEG due to the .htaccess code being too sophisticated for some Hosts/Servers. The .htaccess code was dumbed down so that it would work on all Hosts/Servers Worldwide. And yes you should always be using this Security feature to protect your /uploads folder.
I split your other question and posted it here >>> http://forum.ait-pro.com/forums/topic/wysiwyg-editor-insertedit-link-not-working/