I just purchased XP11. I downloaded the XP11 installer and whenever I go to input my product key, the installer freezes and doesn't allow me to enter any keys. It also doesn't allow me to click back, it just freezes. I've tried redownloading the installer, restarting my computer, running the installer as admin, I cant seem to get it to work. It will allow me to enter about 2-4 numbers before it freezes.