This feels like one of those problems that might be specific to my setup, but here it is anyway.
When I launch Dorico 2, if I then take the focus away from the launch process (e.g. to use another app while Dorico loads) and then return to it, the splash screen has frozen on the step that says ‘Suspend ASIO: true’ and goes no further. I can’t recover without force-quitting the launch process. This is reproducible.
The only way Dorico will launch without a problem is if I keep it in focus the whole time and watch the splash screen. When this happens, I don’t even see ‘Suspend ASIO: true’, presumably because it goes by so fast that I don’t notice it.
I am on Mac (High Sierra) and can provide more system info if needed.