On 18 Oct 2016, at 11:39, Kornel Benko <kor...@lyx.org<mailto:kor...@lyx.org>>
wrote:

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Am Dienstag, 18. Oktober 2016 um 10:12:50, schrieb Paola Manzini
<pm...@st-andrews.ac.uk<mailto:pm...@st-andrews.ac.uk>>
Hi all,
I’ve searched the list and though this is not the first time the problem is
noted, I haven’t been able to find any solution. The short of it is: it just
won’t work. So for instance if I type “5+2” then invoke Edit/Math/CAS, I only
get a lonely = side to the right of the expression, and no result (see
screenshot)
I am currently running Lyx 2.2.0 on Mac Os Sierra, but I had exactly the same
problem under Maverick and El Capitan with previous Lyx versions, namely,
nothing happens.
I have specified the paths correctly (I think) to where the apps are
(Mathematica, Maxima, Maple - nothing seems to work), and I can see the
software calling the app (math-extern maxima), or (math-extern mathematica),
but no result is churned out.
Here is what I have in the "PATH prefix" field under Lyx->Preferences->Paths:
/Library/TeX/texbin:/usr/texbin:/sw/bin:/sw/sbin:/opt/local/teTeX/bin:/opt/local/bin:/Library/TeX/local/bin:/Library/TeX/bin:/Library/TeX/X11R6/bin:/Library/TeX/sbin:/sbin:/usr/local/sbin:/Library/TeX/usr/local/bin:/Applications/Mathematica.app/Contents/MacOS/MathKernel:/Applications/Maxima.app:/Applications/Maple
18/Maple 18.app
Can anyone please help?
Many thanks,
Paola
[cid:1CA68732-253E-465F-82E6-7DF587AC9DB0@st-andrews.ac.uk]
I'd try calling lyx with '-dbg mathed' parameter from a console window.
Alternatively use View->Messages Pane->Settings
Check 'Selected'
Double click on 'mathed - Math editor'
back to 'Output'
...
calling: maxima
input: 'simpsum:true;tex(5 + 2);'
output: '7'
Buffer.cpp (3449): updateMacro of novýsúbor9.lyx
12:31:27.889: Automatický úklad hotový.
Here it shows:
12:38:28.705: Alt+M Afinding 'finding 'finding 'use whole cell: checking expr:
'5 + 2'
calling: maxima
input: 'simpsum:true;tex(5 + 2);'
output: '7'
Kornel
many thanks Kornel for your prompt reply, I’ve tried what you suggested, and
what I got is no output, namely:
11:55:08.254: (math-extern maxima)finding 'finding 'finding 'use whole cell:
checking expr: '5 + 2'
calling: maxima
input: 'simpsum:true;tex(5 + 2);’
does this suggest where the problem is?
thanks,
Paola