Blank screen WL 11.1 - trying to activate new/former projects/montages

Hi there.
I am shifting up from WL 9.5 to 11. I have downloaded WL 11.1 successfully, and it’s seeing my work, but am unable to activate any new montages/projects or existing files. Upon activating, I get a big blank screen. Workspaces -like all other tools on the menu - are greyed out. Any ideas what I’m not getting here? Am using a Macbook Pro/Monterey 12.5.1. Thanks, Hamish

Close the startup dialog, then reset the Workspace layout to “default”.

Close startup dialogue? H

Ah, gotcha. Many thanks, H