Comment Spam Pack Multisite – CAPTCHA images not displaying

This is older information and things may have changed or be different now in this plugin:  Contributed by the WPMU Dev website and Tom – The same general htaccess skip rule that you would use for standard WordPress plugins also applies to WPMU plugins.  In this specific example BPS was blocking the CAPTCHA images from displaying for the Comment Spam Pack MU plugin.

Note:  I believe the installation folder is now /plugins and not /mu-plugins for this plugin.

Create a plugin Skip/Bypass rule for the Comment Spam Pack plugin in BPS Custom Code.

1.  Copy the Comment Spam Pack plugin skip/bypass rule below to this BPS Root Custom Code text box:  CUSTOM CODE PLUGIN/THEME SKIP/BYPASS RULES

Note:  If your WordPress installation is a subfolder installation then add your WordPress folder name in the path.  Example:  /My-WordPress-Folder-Name/wp-content/plugins/wp-juicebox/

Comment Spam Pack MU Plugin - CAPTCHA images not displaying
RewriteCond %{REQUEST_URI} ^/wp-content/mu-plugins/custom-anti-spam/ [NC]
RewriteRule . - [S=13]

or

Comment Spam Pack MU Plugin - CAPTCHA images not displaying
RewriteCond %{REQUEST_URI} ^/wp-content/plugins/custom-anti-spam/ [NC]
RewriteRule . - [S=13]

or maybe none of the above anymore in the most current version of this plugin.

2.  Click the Save Root Custom Code button.

3.  Go to the BPS Security Modes page, click the Create secure.htaccess File AutoMagic button and activate Root folder BulletProof Mode.