WordPress multisite htaccess with rails apps

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 [OR]
RewriteCond %{REQUEST_URI} ^/40under40 [OR]
RewriteCond %{REQUEST_URI} ^/donate [OR]
RewriteCond %{REQUEST_URI} ^/profiles [OR]
RewriteCond %{REQUEST_URI} ^/fundraisers [OR]
RewriteCond %{REQUEST_URI} ^/retreat [OR]
RewriteCond %{REQUEST_URI} ^/institute/ 
RewriteRule ^ - [L]
RewriteRule . index.php [L]
</IfModule>

# END WordPress