I've 3x blogs setup. My 2 subdomain blogs will work fine.

The problem is by using my primary install blog which was installed at http://domain.co.nz/blog/

I'd issues formerly with my 2 sub domain blogs no longer working because of getting /blog/ within the .htaccess I've transformed this how to / however my primary blog thinks about the problem it's apart of my primary website that's Joomla. How could I recieve /blog/ running again?

Current .htaccess

# BEGIN WordPress
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule . index.php [L]
# END WordPress