thanks for the reply, but this is the problem. When i click on the edit pencil icon the page settings is displayed all blank (all white). No delete on the bottom, no delete on the top left. Nothing.
I think this is an error of DNN 4. There should be a delete option in Admin-Pages.
I have no critical problem because my error page is displayed only for administrators. I can make a new page and copy the modules to it.
But the worse scenary is a visible page to all users with this error. How to delete? Need acces to database? I,
and most users, do not have the skills needed to edit the database.