It is version 6.11.10.2266. I have tried switching to different USB ports, rebooting, as have been suggested, but no luck there either. Although I don’t have a license on the dongle for Dorico Pro 2 (it disappeared when 3 was registered), version 2 will open fine, as will Cubase Elements 10, for which I also have a license. My VSL SE licenses are on there as well, and that all works fine. It’s only Dorico 3 that’s giving me issues.