Hello,

This question is already answered in the documentation.pdf that is included in your download file. I am pasting it below

Please

1. make sure that your apache mod_rewite is enabled
2. check that .htaccess file is successfully uploaded and exists in the main directory of SMA
3. base_url in app/config/config.php

If you are using godaddy, please visit the codeigniter official guide here. You might need to check and modify you .htaccess files too.

You can always check your error log to get more information about the issue.

As per my experience, it cause due to .htaccess file over 90% times. Please check it again and if you are on linux/mac the . files would be hidden.

Thank you