Hm. Well, when we've encountered that problem in the past, it's only shown up on Windows 7 and Windows 8 computers, but we have found that if we reprogram the H9's USB chip the problem will go away. But unfortunately, you'll have to send your H9 in to us for us to reprogram its USB chip. If you'd like to do that, please send an email to support@eventide.com, and we'll get the ball rolling on that.