Civil 3D 2015 Surface to Navisworks 2015 Problem

I was recently appending a Civil 3D surface (2015) into Navisworks Manage 2015.  For some reason, I only get a rectangle in Navisworks.  It however appends into Navisworks Manage 2013 fine.

Thanks to this blog, found out that I needed to install the Civil 3D 2015 object enabler.  The link on the blog seems to be broken so here's the link to the Civil 3D 2015 OE.

AutoCAD Civil 3D 2015 Object Enabler