In my various rambles, I made this point.

iMi7:bin jkt$ ja
   JVERSION
Engine: j807/j64nonavx/darwin
Release-a: commercial/2019-01-11T11:44:43
Library: 8.07.22
Platform: Darwin 64
Installer: J807 install
InstallPath: /applications/j64-807
Contact: www.jsoftware.com
   load 'pacman'
   'update' jpkg ''
Updating server catalog...
Local JAL information was last updated: 16 Jan 2019 08:14:56
All available packages are installed and up to date.

   load 'plot'  
   plot ?~9   NB. trivial plot
NB. resulting PDF displayed by Preview was blank

   'surface' plot +/~ 1 o. i: 6.28j99  NB. Devon's lovely demo 
|NaN error: mp
|   dat=.}:"1(y,.1)    mp Tfm
   
NB. error is not good.

What I didn't say was that this exact same script works just fine with expected 
results in  the -

MBpro:~ jkt$ ja
   JVERSION
Engine: j807/j64/darwin
Release-a: commercial/2019-01-11T11:43:43
Library: 8.07.22
Platform: Darwin 64
Installer: J807 install
InstallPath: /applications/j64-807
Contact: www.jsoftware.com

BUT downloading the nonavx version onto the same machine -

MBpro:~ jkt$ /Users/jkt/Desktop/j807\~avx/bin/jconsole ; exit;
   JVERSION
Engine: j807/j64nonavx/darwin
Release-a: commercial/2019-01-11T11:44:43
Library: 8.07.22
Platform: Darwin 64
Installer: J807 install
InstallPath: /users/jkt/desktop/j807~avx
Contact: www.jsoftware.com
   
   load 'plot'
   plot ?~9
NB. produced empty PDF

   'surface' plot +/~ 1 o. i: 6.28j99
|NaN error: mp
|   dat=.}:"1(y,.1)    mp Tfm
NB. No PDF produced, same failure as on the originally reported system

~~~

Looks like a bug in the avx versus nonavx versions...

Anyone out there using Engine: j807/j64nonavx/darwin  that can check to see if 
they get the failure?

- joey

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