All wordpress network subfolder sites being redirected to main site

Question

I have a WP network setup running the latest versions of WP and Buddypress. I want to set up ~40 users with blogs, and have created these blogs using the Batch Create plugin, but now when I try to visit one of these folders, eg burkphysics.com/elizabethf, it redirects to burkphysics.com. All sites, even sites I create manually do this.

I've followed the config steps to properly configure both my wp-admin file and .htaccess file, and I can't see any problems. This also worked fine last year before I upgraded wordpress and buddypress.

Here's the .htaccess file:

RewriteEngine On
RewriteBase /wordpress/
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).*) $1 [L]
RewriteRule  ^[_0-9a-zA-Z-]+/(.*\.php)$ $1 [L]
RewriteRule . index.php [L]

Any help would be greatly appreciated.

Answer 1

Since you installed wordpress in a sub directory called "wordpress" you should try changing your last rewrite rule like this.

RewriteRule . /wordpress/index.php [L]

Answer 2

Check if the multisite plugin hasnt been deactivated during the wordpress update... It happened to me once and it drove me mad for hours :P