problem displaying surfaces

[alex_novi]

Good morning.
work on changes and other automotive details, since I installed st7 I can no longer import surfaces with "solid" display.
What settings do I need to change?

I attach an example, I only see the skeleton as an example below:
Thank you in advance.

 

[Be_on_edge]

go to the solid edge options, tab "view", put the check on "use shading on buildings"

Hi.

 

[alex_novi]

I didn't fix it, nothing changes.
I do not understand why in the same imported set, some surfaces are displayed correctly and others only as buildings.

 

[alex_novi]

I have solved, thank you mythical!! If one day it happens I'll have a lot of beers, always very useful!