I'm installing a fresh copy (revive-adserver-3.1.0 - downloaded from revive-adserver.com) for the first time, and I am also getting a blank install.php .
I'm running ...
Ubuntu 14.04.1
MySQL 5.5.38
PHP 5.5.9
Zend Engine v2.5.0
I'm installing using a sub-domain on a separate server.
sub.example.com/www/admin/install.php returns a blank screen.