Rhino to Blender Failed

Hi

I am trying to export a rhino model into blender, but couldn’t made it work and I am not sure why.
I am flowing the most common instruction I find online which is assign object to different material and then export to obj, made sure my mesh is dense enough for the poly, but yet, when I import the file to blender, nothing shows up. I set both unite to feet. So I don’t think its a scale problem. Hope someone out there could tell me what I did wrong.
I am attaching screen grab to show my settings.
thanks

!

I can only upload one image at a time. so here is another screen grab

I just tried and seems to be coming in okay. Using Rhino 5 and Blender 2.9.

exported selected but kept mesh fairly low. Maybe too dense? Try something simple and see.

rhino.obj