V4 beta Aug-28-2018 available now

 From:  Michael Gibson
9044.26 In reply to 9044.25 
Hi Alex, can you please contact me by e-mail at moi@moi3d.com and we can continue there?

The author of the STEP import/export library wants to send some test files over to you to see if this can be tuned up.

Thanks, - Michael