I just setup a subdomain with the following RewriteCond:

RewriteCond $1 !^search.php$  
RewriteCond %{REQUEST_FILENAME} !-f 
RewriteRule ^/?([^/]+)$ search.php?q=$1 [L,NS] 

I'm using the same rewrite condition on my main domain and it works perfectly. However, when I set it up on the subdomain, it simply outputs "index.php" when going to http://subdomain.domain.com

Every page on the subdomain outputs the page name in the body instead of processing the code, except for the search page, which appears to be working correctly.

Any idea why every page but the search page works? What can I do to correct it?