debug.log says license file loaded. The popup window "This is BETA of Aero Glass for Win8.1." still appears. Edit: I used the licence key generated under win 8. I just generated a new one under win 8.1, and it was different than the old one. Let´s see if that works. Edit2: No popup anymore, maybe that´s also the reason why automatic downloading of symbols did not work. I did not change my CPU or harddrive, so I expected the old licence key to work, but obviously that was wrong.