By using i18n plugins I assume that you have mutlilanguage website.
But since there's not even a single char in website's source code, I think you used a php code with unclosed php brackets or a faulty code which prevents the website from being rendered
Enable debug in gsconfig and look if there are any errors.
Also disable all plugins to see if any of them doesn't cause errors.
Edit:
Also make sure that website's url and .htaccess rewrite base rules are right.
But since there's not even a single char in website's source code, I think you used a php code with unclosed php brackets or a faulty code which prevents the website from being rendered
Enable debug in gsconfig and look if there are any errors.
Also disable all plugins to see if any of them doesn't cause errors.
Edit:
Also make sure that website's url and .htaccess rewrite base rules are right.
Addons: blue business theme, Online Visitors, Notepad