My problem is very strange.

I have a complex object meshed by pro*am. I checked the mesh: only warepage and internal angle problems, but no more.

I had to build, as base of this objects, a very simple geometry (cylindrical) in ProStar.

When I built the base and I checked the mesh, I found some cracks in the volume of the first object and I had to assemble them by hand. I didn't find these cracks formerly.

What's happened?

I apologize with everybody. I solved the problem: the fault was mine!