I've a problem with mod_rewrite

[jck]

Good Morning,
i've installed a free version of eSyndaCat, 1.5 version.
i've created a category but in the public version if i click in one of category i receive not found page.
mod_rewrite is active on my server and .htaccess is configurated
i've installed the script in /directory folder
the address is http://www.staffinformatico.it/directory
where is the problem?
my .htaccess is write in this mode_

# enable mod_rewrite
RewriteEngine on
RewriteBase / i try also /directory but not found

# mod_rewrite rules for categories pages
RewriteRule ^(.*)/$ index.php?category=$1 [QSA,L]
RewriteRule ^(.*)/index([0-9]+).html$ index.php?category=$1&page=$2 [QSA,L]

# mod_rewrite rules for new links page
RewriteRule ^new-links.html$ new-links.php [QSA,L]
RewriteRule ^new-links([0-9]+).html$ new-links.php?page=$1 [QSA,L]

# mod_rewrite rules for top links page
RewriteRule ^top-links.html$ top-links.php [QSA,L]
RewriteRule ^top-links([0-9]+).html$ top-links.php?page=$1 [QSA,L]

# mod_rewrite rules for popular links page
RewriteRule ^popular-links.html$ popular-links.php [QSA,L]
RewriteRule ^popular-links([0-9]+).html$ popular-links.php?page=$1 [QSA,L]

# mod_rewrite rules for editors links page
RewriteRule ^editor-links/index.html$ editor-links.php [QSA,L]
RewriteRule ^editor-links/index([0-9]+).html$ editor-links.php?page=$1 [QSA,L]

# mod_rewrite rules for view link page
RewriteRule ^(.*)/(.*)-l([0-9]+).html$ view-link.php?cat=$1&title=$2&id=$3 [QSA,L]

# mod_rewrite rules for news page
RewriteRule ^news.html$ news.php [QSA,L]
RewriteRule ^(.*)-n([0-9]+).html$ news.php?title=$1&id=$2 [QSA,L]

[Nick Collins]

Hello jck, try to add the following line after "# enable mod_rewrite":
Options +FollowSymLinks