This happened to me to me after a firmware update, I submitted a ticket, and they told me it's been discontinued, and a solution that didn't work. So what I did was uninstalled UC, then download the old UC 8.1 i think, then got it working again. I then download the UC 3.2 ver I think, and did the update, and even updated the firmware and it still works. So I'll leave it there, i'm afraid if I go up to high in versions I'll break it again.