hi everyone
i am unable to use some sessions :

- Asymptote
if i take the first menu item in "Asymptote" menu, that is to say :
 size(6cm,0); pair pO=(0,0), pA=(3,0), pB=(0,2);
 dot("O",pO,S);\ndot("A",pA,E,green); dot("B",pB,N,red); dot("I",I,W,blue);
 pair pM=3+3I, pN=-2+I; dot("$M$",pM,N,orange); dot("$N$",pN,W,gray); pair
 pV=pA+pB; dot("$V$",pV,W,pink);\n\
it answers "Error running asy:"

- Giac works well except for example
if i take the first "spreadsheet" menu, i see on the screen smething strange :
 spreadsheet(spreadsheet(spreadsheet[[["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2]],[["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2],["","",2]]]))
and the answer "Plot cancelled or unable to plot"

- maxima says "en cours" (means something like "running")
if i type 1+1; it never answers anything

- professor says all the time "dvips: Could not find figure file proftmp.Tab.0; continuing."
and plots a black square
thought, professor called from LaTeX works since Guillaume Connan has helped me updating it.

if anyone can help...

Vincent