No results for me either. Index.php checked and replaced, theme checked and replaced, .htaccess checked, replaced and erased…. site still gone missing.
One interesting thing about this: If you type an incorrect url (to a folder or file that doesn’t exist) it doesn’t give any kind of error back. I don’t know if it is normal but it sounds to me like the problem could be somewhere else… I’m not an expert anyway, just pointing it out.
Thanks to all for your help!