AutoPLANT SS8 and Navisworks 2015 Object enabler

Is there a list that shows what version of Navisworks works with what version on AutoPLANT and what object enabler version should be used?

I have AutoCAD 2016 - AutoPLANT SS8 and Navisworks 2015, but just can't get the reboid's to display as anything but cubes.  I've tried setting the saved version in Navisworks to 2015, 2014, 2013, 2012, 2011..  Solid render.  But I'm starting to think I have the wrong versions working together or the wrong Object enabler.

Any help would be appreciated.

Thanks

Ray