Alice, thanks for your reply.
To create the project:
I bring up the "New Bareboard Project" window. I type in a project name.
Then the window gives me a list of supported MCUs. I pick "Kinetis L Series".
The window gives me a sub-list of L-series MCUs. I pick "KL46Z (48 MHz) Family".
Then nothing happens. The "Next" button never becomes active. The only buttons that work are "Back" and "Cancel".