It now does not crash, which is an improvement.
It now just hangs.
I actually go into Theme-It. I touch every single button, and movable selectable object as if I am a designer searching for a good "look".
Then when I try to "Finish", the button does not work. Better than a crash, though.
Hope you can reproduce.
,Toi be clear, the Cancel button still works, so I can continue with other stuff, hopefully