em Client will not start / load all of a sudden. worked fine yesterday

the routine of simply clicking on the icon does not work as of today.

Hello Richard,
did anything in your Windows setup change? Did you install any new programs that could block eM Client from starting up?
Have you tried restarting your computer?

Also, I see that you have a Pro license. I suggest getting in touch with our Pro support next time to ensure a quicker response.