Rhino 6 - obj import results in invalid mesh

Hello forum!

I seem to have a recurring problem with imported geometry from a Wavefront (.obj) from ArchiCAD to Rhino 6. Some geometries often are joined and have an ‘invalid mesh’. Does anyone have the same experience or know what is the reason for that? My assumption is that there is something there with how R6 handles the translation of obj, but i would appreciate a more educated answer and perhaps a solution when it comes to the import or export.


Can you please post a small example file that illustrates the problem?