Site Creation Problem

I am trying to setup multi-site on subdomains. No errors are returned or reported to me by WordPress, but when I go to my subdomain (where the site should be) I get a parent directory. If I try to go to the subdomains dashboard or any other page I get a 404 – obviously, no new site was installed there.

This is EXACTLY what is in my .htaccess

# BEGIN WordPress
<IfModule mod_rewrite.c>
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]
</IfModule>
# END WordPress