I used to have a static page on www.rwb-hk.com and I was working on my site at www.rwb-hk.com/wp

I moved everything back onto my main domain www.rwb-hk.com and it works fine and all but I realized that if I try to access the site via www.rwb-hk.com it doesn't work and gives me an error. I've tried redirecting the site through cpanel but it doesn't seem to do anything. I've also tried modifying .htacess with

RewriteEngine on

RewriteCond %{HTTP_HOST} ^rwb-hk.com [NC]

RewriteRule ^(.*)$ http://www.rwb-hk.com [L,R=301,NC]

This does do a redirect but not to the index.php file in the main folder. Instead it redirects to this link: http://www.rwb-hk.com/wp-content/cache/page_enhanc...

Any help on this?