I have tried opening a couple of Pan 6 databases, and they have opened without windows. It happened with earlier pre-prerelease versions as well, but there was nothing to do about it then. Maybe it is something with my system. I need to try it with one of my cleaner accounts.
So far, I have had it crash twice. No, when I just checked on it again, it crashed one more time. I just clicked on a window, and it quit. It is a nothing database, one field with numbers which should display in a Text Display box, but nothing shows up there, just the boxes. I will send it to you.