So I downloaded "Leela 0.70 engine only" here http://www.sjeng.org/leela.html
to my harddrive.
and tried adding it to Smartgo through tools/ options/ engines/ go text protocol engines.
I linked it to the Leela file I downloaded onto my hardrive, but it says "gtp not working" under the "go text protocol engines" window
P.S. my antivirus software flagged these executables as dangerous but I changed it to recognize them as safe.
Don't worry, the source is trustable.
You downloaded 2 executeables, one that uses the GPU and one the CPU only.
Try the "Leela070GTP.exe" and add the commandline option "-g" and any other option you like.
From the readme file:
-h [ --help ] Show commandline options
-g [ --gtp ] Enable GTP mode
-t [ --threads ] arg Number of threads to use
-p [ --playouts ] arg Limit number of playouts
--noponder Disable pondering
--nonets Disable use of neural networks
If this works you can try the same with the gpu version, it should be faster but needs a compatible video card.
Hope this helps,