svenl:
I was able to open one of these files in AC16 (VGCC536-4G.3dwg) by changing the file extension from "3dwg" to "dwg", then using the
Open Object... command with the dwg translator
02 for editable import by changing in that translator's Open Options >
Convert 3D Solids, Regions and Bodies into GDL objects. The file is slow to open/convert and slow to appear in the object's 3D Window, the 3D Script is 196,287 lines of code, so this part will be a drag on performance. Maybe there is a better way.
David