Blank Screen

Hi there,

I suspect this is a really simple mistake I am making.

For years I have used Fusion to run an old DataEase database with no problems. I don't use Fusion for anything else so have minimal knowledge.

Somehow or other I've got is so that windows is running but the main screen is blank - see attached image.

I'm sure I've messed up some settings somewhere - can someone advise.

thanks