You could internalize the geometry in your GH file, skipping the Rhino 6 file issue. And provide a screen shot at 100% standard size so the subtract and multiply components can be replaced.
spheres_Italy_2018Feb20a.gh (86.7 KB)
WARNING!!! High ‘Sphere count’ (300) so SDiff takes ~48 seconds on the profiler, below!
spheres_Italy_2018Mar3a.gh (86.4 KB)