This is the second of two questions that I failed to solve this morning on my own when migrating to RUMlogNG...
I see the "Select county" warning in red within the logging area, but I can't figure out where the actual County field is there. Am I just staring at it and missing it somehow?
Move the mouse over the "Select County" text. You will notice, the mouse pointer changes. It is a contextual menu, just right click on it. (or ctrl click, or 2 finger tap).
This contextual menu comes into view, whenever you have entered a State for a US call sign.