I was able to get through the PS4.5 installation. Got into the administration section too.
I am getting this error on the prepropagation page:
PHP Warning: mysql_free_result(): 21 is not a valid MySQL result resource in D:\home\acalamedical.com\wwwroot\webassist\plugins\main_menu\menu.php on line 142
Here is line 142:
<?php mysql_free_result($DigitalGoods); ?>