Import kit dialogue does not show up

Dorico Elements 5.1.32.2114 here.
Create a new project, select add single player, add instrument and try to import a kit. I don’t see any open file dialogue!
Any other way to import a kit?

Works just fine in my old Dorico 4.3.

Thanks for reporting this. I’m sorry for the inconvenience caused by this regression. We will fix this in the next update.