I did all step but I can see no difference on my site.

After include(DIR_WS_INCLUDES . 'magic_seo_url.php');

What else?

I followed all the steps in the installation guide but nothing happen. No error, nothing. Also, what is a readonly-htaccess? Open the file www/includes/application_top.php located in your CRE Loaded installation and before following block code: include(DIR_WS_INCLUDES . 'magic_seo_url.php'); before ...