Topic: rewrite engine & page404

When i using  rewrite engine then on a page 404 appear next:
CuteNews has detected that you are including show_news.php using the URL to this file

This is incorrect and you must include it using the PATH to show_news.php. Example:
this is WRONG :   <?php include(""); ?>
this is CORRECT:   <?php include("cutenews/show_news.php"); ?>

if you think this message shouldn't be shown, open current file and delete check_direct_including() function, at own risk!

in .htaccess i have
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ /news/show_news.php?cn_rewrite_url=$1 [L]
How i can fix it?