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