I recently upgraded from Win 7 to Win 10 and it might be a coincidence but I can no longer run Vegas 15/16/17 . They all hang at "Creating I/O" . I've tried uninstalling and reinstalling 16 and downloaded the trial of 17 an it does the same thing. Is there any dependencies that would have changed with the installation of Win 10? I did the same Win 7 to Win 10 upgrade at home without incident. All my other apps work as they should. Thanks