Pro-Sites 3.2.1: upgrade page dismiss error

Hi Guys,

One of my users did inform me about an error. I recreate the error by creating a new site. When you click on "No, I will continue with a free site for now" you will get a blank screen for there is a "/" missing in the url between wp-admin and index.php:

http://mysite.com/wp-adminindex.php?psts_dismiss=1

Same problem if one clicks one "bulk-upgrades":
http://mysite.com/wp-adminadmin.php?page=psts-bulk-upgrades

regards