This is a fresh install
I can't reproduce the blank page error.
What version of MySQL do you have osTicket installed on?
What version of PHP do you have osTicket installed on?
What OS (Windows, Linux) do you have osTicket installed on?
Turn on error reporting and see if any errors display.
File /main.inc.php and find
ini_set('display_errors',0);
ini_set('display_startup_errors',0);
Edit that to
ini_set('display_errors',1);
ini_set('display_startup_errors',1);