Thumbnail views of Sketchup 2015 files in Finder on a Mac. I can see thumbnails of older Sketchup thumbnails, but not 2015.

I cannot view a thumbnail view of my (mac) Sketchup 2015 files in Finder. I've read many of the work arounds, tried downloading GraphicsConverter to view the thumbnails, but no luck. I noticed that i can view a very low res thumbnail of files made with earlier versions of Sketchup, >2013. Thanks.