Subdirectory Sites Dashboard Not Functioning Properly

Hi, I just updated a friends WordPress site to a subdirectory multisite install and the dashboard for any newly created sites is not functioning properly.

It shows up as a list of hyperlinks instead of the standard dashboard. Clicking on the hyperlink dashboard functions just brings me to a new set of corresponding hyperlinks.

I’ve been reading threads all day trying to solve this issue and it’s driving me crazy.

Any help would be much appreciated.

This is My .htaccess file
# BEGIN WordPress
RewriteEngine On
RewriteBase /blog/
RewriteRule ^index\.php$ – [L]
# uploaded files
RewriteRule ^([_0-9a-zA-Z-]+/)?files/(.+) wp-includes/ms-files.php?file=$2 [L]
# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ – [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) $2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ $2 [L]
RewriteRule . index.php [L]
# END WordPress