I was trying different themes and out of the blue, a category widget appeared.
In one theme it appears in the side bar, in another theme it is in the footer, and in the original theme in the header.
So it sounds to me it’s in the db, but I have no idea how to repair that. I have an older backup but would rather fix this.
Take a look at http://www.nicolegruendl.com and you will see it appear on the header.
Thanks for your help.
Randy