xmaxima : trouble for plotting with gnuplot on a FreeBSD



Hi,

I installed Maxima :

Maxima version: 5.9.1
Maxima build date: 23:14 2/13/2005
host type: i386-portbld-freebsd5.3
lisp-implementation-type: CMU Common Lisp
lisp-implementation-version: 19a

on a FreeBSD 5.3

It seems to work fine ; if I type
plot2d(sin(x),[x,0,2*%pi]);
under wxMaxima (I also installed it ;-) I get a gnuplot curve,
but if I type the same under xmaxima, I get

can't read "_WinInfo.maxima.text(atMaximaPrompt)": no such element in array
can't read "_WinInfo.maxima.text(atMaximaPrompt)": no such element in array
while executing
"set _WinInfo[set win]($var)"
(procedure "oget" line 4)
invoked from within
"oget $w atMaximaPrompt"
(procedure "CMeval" line 24)
invoked from within
"CMeval .maxima.text  "
(command bound to event)

Do you understand why ?

Regards,