I built a rocket it and got it to orbit around Mun, so the game was working ok for me.
I built a second rocket (to go rescue Valentina who is unfortunately stuck in Mun orbit with not enough fuel to do anything else). When I clicked the "Launch" button for that second rocket, the game showed the static image before getting to the launchpad view and locked up. I had to kill the app.
Now I don't see any of my saved vehicles when I tried to load them in the VAB. I do see the stock vehicles that are available to load.