Emmanuel,
Good news, it all works just fine. I had to do an update, maybe that's why it temporarily blocked SH3D.
However, I noticed another problem in version 3.7, as well as in the 4.0 betas. When I draw a room with sloping walls, the roof stays horizontal and won't follow the walls. I enclose an example, hoping that you can reproduce this bug.
Hans
http://www.mediafire.com/?ezy2rkqwvr4wxh8