Can someone help please I've just tried installing the SEO mod and I'm pretty sure I've followed all the instructions to the letter.

I'm getting no change on the zen cart, the urls are as they were before, and now I can't get into admin.

I'm getting this error when I try to go into admin panel:

Warning: include_once(includes/classes/seo.url.php) [function.include-once]: failed to open stream: No such file or directory in /mounted-storage/home86a/sub003/sc47482-CYCC/www/GothicMagic/admin/includes/functions/html_output.php on line 25

Warning: include_once() [function.include]: Failed opening 'includes/classes/seo.url.php' for inclusion (include_path='.:/usr/local/lib/php/') in /mounted-storage/home86a/sub003/sc47482-CYCC/www/GothicMagic/admin/includes/functions/html_output.php on line 25

Fatal error: Class 'SEO_URL' not found in /mounted-storage/home86a/sub003/sc47482-CYCC/www/GothicMagic/admin/includes/functions/html_output.php on line 27