I think my installation is haunted as I just tried the panorama, I drew a box for a floor - 4 walls - roof - 5 windows and a door, a pretty simple house, I saved the file, deleted one of the windows and re-saved the file and immediately ran the panorama in wireframe, which actually worked ok, but, when the panorama finished it put back the window I had previously deleted

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Perhaps TC thought my house looked better with 5 windows

I'll give your suggestion regarding the drawing window a try ....... Thanks