I apologize, somewhere in the process I failed to add this step to the install instructions (I'll update the install instructions after I post this step here):
Open auth.php:
Find
Code:
include_once $xcart_dir."/config.php";
After, Add
Code:
############################################################
# SEO Optimization Mod by intel352
############################################################
if($seo_enable)
include_once $xcart_dir."/seo.php";
# END SEO