Strangely, I have exactly the same behavior with today’s release
There were about 30 Aviators liveries to update after the release installed
Each time I select one and click install, it downloads, seems to install correctly, and then immediately freezes the UI.
The background animation is still alive, but the mouse is totally inoperant. Impossible to do anything else than Alt-F4 to kill the sim
I will open a Zendesk ticket