I didn't have a problem till I added windows to my building, then all of
the sudden I am losing random walls throughout the building. I've tried
re-designing the building and the same thing happened again. How do I
get past it?
Error says: Wall defined on . . . has a net negative wall
area.
I haven't added more window than wall, and some of the walls that have
"disappeared" didn't even have windows.
-Jason
