500 Internal Server Error after enabling Falcon

Hi, Thanks for the awesome plugin.

Everything seemed to be going well until I enabled falcon engine.

I followed the on-screen instructions and downloaded a copy of my htaccess. After enabling falcon, I was immediately presented with a 500 error on the entire domain.

Faced with this issue, I pasted the contents of the downloaded file (given below) back into the htaccess but the problem seems to be persisting.

Do you have any suggestions as to how I can get the site back up?

Thanks

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteRule ^redacted_admin/?$ /wp-login.php [QSA,L]
RewriteRule ^redacted_admin/register/?$ /wp-login.php?action=register [QSA,L]
RewriteRule ^redacted_admin/lostpassword/?$ /wp-login.php?action=lostpassword [QSA,L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

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