Cannot save Map in WM

[McArti 0]

Hi created a map in World Master for a few hours and when I want to save it, after a little loading time there only appears a Warning sign with no other Text or content. So I couldnt save it and all was for dump. But I will try again if you can tell me how to fix this? And how is it possible to scroll further away with the camera without making the map to disappear?

Thanks!