My consoles don't work any more after my upgrade from Proxmox 3 -> 4. When I use Firefox, I get a blank console window that hangs on "Authenticating using scheme: 2". When I use Safari, I additionally see a dialog which you can see attached. This is for my two VMs. For my one CT, it doesn't even get as far as that, it just hangs on "Loading". Of course, the machines all still come up OK and I can SSH into them from a regular terminal, just not from the Proxmox console. Help!