Troubles exporting

[jdalarcon]

Hello,
I have troubles trying to export to a febio file. When I try to do it, Preview crashes before to complete the febio file, so I get a .feb file incomplete, and it's impossible to run.
I use Gmsh to create the mesh from a complex geometry, and I imported to preview using stl files. I made all the steps to create the case (axisymmetric), including the geometry, materials, loads, boundary conditions and contact. But Preview crashes when it's exporting.

Thanks if you could help me

Juan