strcat error on printing plots

[Marco Atzeri]

Dear all,
using 3.2.0 on cygwin and printing enough plots

a="prova..png";
x=1:100;
plot (x,x)
print( "prova1.png","-dpng")
print( "prova2.png","-dpng")
print( "prova3.png","-dpng")
print( "prova4.png","-dpng")
print( "prova5.png","-dpng")
print( "prova6.png","-dpng")
print( "prova7.png","-dpng")


I obtain the following multiple message

********************************************
error: Invalid call to strcat.  Correct usage is:

 -- Function File:  strcat (S1, S2, ...)


Additional help for built-in functions and operators is
available in the on-line version of the manual.  Use the command
`doc <topic>' to search the manual index.

Help and information about Octave is also available on the WWW
at http://www.octave.org and via the address@hidden
mailing list.
warning: __gnuplot_get_var__: some elements in list of return values are 
undefined
*******************************************************

Is this fault happening also on other platform ?

I presume some replot cleaning problem in
 
/usr/share/octave/3.2.0/m/plot/print.m

but eventually is a strcat issue

Thanks
Marco