After enter Structure Name preview incorrect?

When i enter in Load Mode the Structure file, i can not see the Construction in Preview Window.

 

 

First Picture: Shows the Structure after pressing "Load"

Second Picture: Enter the Structure Name but no Preview and see only the Structure Block and Bounding Box Size from the Structure.

 

When I have a house, I can not see first where is the Door and it's a problem for flipping and rotating the structure.