"Vincent" <nomail@nomail> wrote:
And here is the solution:

As you mentioned there was an error in file converting. Actually, my file with
..nas extension was not a kind of STL format! It was generated by NASTRAN. So, at
first I converted it to the STL using Gmsh. Then using MeshLab i converted it to
OBJ. And now it could be opened (beautifully) using Poseray. without any error.

Thanks to all again.

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