PAXTON, I tried installing Modern AAC on Xampp lite, it didn't work, when I filled up the form in http://localhost/install/, it redirected to http://localhost/install/index.php, and showed me a blank page... Maybe because it was xampp lite...
Website address could not be established, tried to connect to http://sunera.sytes.net/API/isValid.php if the link is valid check if this server is allowed to use local API.
Please turn on error reporting.