Opening a Rhino 3dm file in MOI

I’ve sent 3dm files I’ve created in Rhino to a colleague who uses MoI 3d but he can’t open them. I’ve tried exporting specific objects and exploding a solid into surfaces without success. Any tips?

Maybe try an earlier version of .3dm (like V5?)

Also note Moi does not read meshes in 3dm files.

It worked with Rhino 5. Thanks for your help