I have SW2017 Premium, but

when I try to save As Scanto3D(.stl, .obj, .wrl), I always get "no available entities to process through stl(obj, wrl)".

Scanto3D using API is also unaccessible due to swngre.dll does not have a valid COM structure.

What am I missing?

eDrawings conversion to polygonal formats works fine though.