Following error occurs when trying to create new site in Sitebuilder:
Internal SiteBuilder error. File: /usr/local/sitebuilder/include/SB/Site/Structure.php; Line: 116
Message: The error occured while site structure saving (for site with identifier 'site_name').; Code: 0
It seems there not enogh permissions for apache to save site structure.
Please make sure that SITEBUILDER_ROOT/htdocs directory is owned by apache user and group.
It is also possible that SELinux prevents saving content. In this case SELinux should be disabled:
This is temporary disabling. To disable SELinux at all on the server you need edit /etc/selinux/config file and set:
# setenforce 0
If you don't want to disable SELinux you need to configure it in proper way.