Could use some help with UltimateTagWarrior, again

[Fonz]

Ok,

On http://www.sexchatadventures.com I use UTW but the problem is that when I activate this function "Use url rewriting for local tag urls (/tag/tag instead of index.php?tag=tag)" I always get redirected to the 404 page (index in this case); I made my .htaccess file writable but still no luck.

This is what I've got in my .htaccess file:

<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

If anyone has a clue un what's wrong here please let me know. Thanx