Hi,
3D Warehouse has been a great resource for content, and of course has a link icon in 3DXchange and works great in refining that content. 
3D Warehouse made changes to their database to where they typically have 2017 as the newest dated download available, whereas 3DX accepts 2015. 

I don't know if Reallusion pays licensing fees for the container format / importing, but it would be wonderful to have that functionality back. After reading a few threads, it seems like there are few workarounds...one of which involves purchasing Sketchup Pro (yearly subscription) just so they can convert the models to 2015 versions -- which works without hitch. 

If that "Save As" conversion could happen in the background of 3DX, or be updated to work with newer versions of SKP files -- I'm sure many would greatly appreciate the amazing avenues that has opened up for me and others. 

Thank you!

John