After downloading the file, it opens in a strange way: I only see the 2D view, nothing else. When I fiddle a bit, I can make SH3D full-screen, move the vertical divider to the right, and move the horizontal divider up, so that I can see all four windows.
Apart from several strange things I see in his design, the most notable is the absence of the furniture list. See the picture below which shows the central part of the screen (otherwise the picture would have been too big to post).
I did this in v2.6 and in v3b3, both with the same result.
Is this a bug? Was the file saved using the two-screens option? Is it the gigantic "texture" applied to the ground? It definitely is strange.
Hans
----------------------------------------
Hans