Another dashboard loading problem…

Hello all,
Sorry for bothering, but after hours of searching I can’t seem to get my multisite working right. I have the domain decinteriors.com, and made the multisite subdomain trulybeautiful.decinteriors.com through wordpress. I followed all instructions, and also added a wildcard domain at my host (hostgator). Only problem is that when I click on the new subdomain, I receive a blank page. Anyone know what my problem could be?
By the way i’m super new at this, so go easy on me 🙂 THANK YOU!

Here is my .htaccess file contents:

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

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ wp/$1 [L]
RewriteRule . index.php [L]

# END WordPress