I’m using 1.4.18 - I haven’t tried upgrading yet. In any case, I normally use
Simplify3D to generate the gcode file, then copy it to an SD card on the Mac and
use the external SD card on the Zmorph to print. I started having problems with
the USB connection, possibly due to the long USB cable I have to use with the
way my computer area is set up, so I bought a little USB disk writer that works
with SD cards and a couple of other types that I don’t ever use.
I’m using OSX 10.12.6 on the Mac Mini I have the Zmorph (and a Robox CEL)