I recently decided to buy Sony Vegas Movie Studio Platinum (version 13), and every time I enter the serial number it accepts it but brings me back to the serial number entry page (the "Your Movie Studio Platinum Trial Has Expired", enter a serial number or buy it). So after I input the given serial number, I get a notification "This application will restart to complete the upgrade process", then it just loads and asks for a serial number again. I bought this physical product on Amazon where I also noticed a few others having the same exact issue as I am in the "Review" section. I don't think this key is faulty because I was able to successfully register this product under my name on MAGIX but I can't seem to activate my key successfully. I've tried everything; removed hyphens, reinstalled the product, used lowercase, swapped 0's for O's; nothing works.