Autocad Error import file

Good morning,
First, I have exploded, purge, flatten, and cleaned everything in my autocad file before exporting.
I have exported my file into different versions of Autocad from the latest 2013 to the 2000 version. In all of them I keep getting the same error when I try to import it in Rhino:

Command: Import
Opened AutoCAD file version Unknown.
Error converting file.

Am I missing a step before importing to Rhino?
I have tried importing the dwg file from Vectorworks and Exporting it again into all versions of Autocad but still the same problem.

Thank you.

My Rhino version in mac: 5.1 (5B161)
Mac: Yosemite 10.10.5

Hi Jend - can you please post the file, or send to tech@mcneel.com? Thanks.

-Pascal

Having the same issue, “error converting file” when trying to import a DXF into Rhino. Any more feedback on how this can be fixed?