I'm having the same issue as the OP, though mine is a new install (someone in my company's IT department just recommended the program to me). I get the same screen. I'm running Windows 10 with Norton Security Suite. I turned off Norton for 15 minutes to try to run, no dice. I tried the "Slim" option, as suggested above, same. I can open the executable from the download folder, I hit "yes" that I want to allow it to make changes to my computer, and then I get the same blank screen that the OP shared above. Help?
