I’ve updated the 3dsMax exporter. It now supports VRay Next (as well as previous versions of VRay) and Corona. Besides that it uses a new security protocol (TLS1.2) but that doesn’t affect the performance of the script.
You can get the latest version by auto-updating the script from within 3dsMax. Just open the script and it will ask you to update. You can also get the latest version here. The documentation is still located here: http://sketchfab.klaasnienhuis.nl/
If you have any questions, suggestions, or something doesn’t work just ping me here on the forum or reply to this post.