The named ones download as "named" for me.  However, I was having trouble with downloads in general.  Not sure if it was my FF browser, but I'd click a link and nada - nothing happened.  I had to re-load or open the order again to get downloads to work.  This happened on several of the files in my recent order - regardless of Rendo or Amazon choice.

3-D Arena | Instagram | Facebook

I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use.
-Galileo