Hi Burr, thanks - I see the problem now. Actually the same exact thing happens if you read the file into rhino version 3.0 .

It seems that Rhino version 4.0 has a change to the .3dm file format that is not compatible down to the v3 version reader, which is what MoI currently uses.

To get the units across properly in this case you will need to save from Rhino as a v3 3DM file and then that should work.

- Michael