plotting problem

[shimon cohen]

Hi,
I just installed octave in my server.
When i am trying to plot a simple curve the following message appears.
*****************************************************************************************
octave:1> x=[0:0.1:10];
octave:2> plot(x,sin(x));

gnuplot> if (exists("GPVAL_TERM")) print GPVAL_TERM; else print NaN
                    ^
         line 0: invalid _expression_

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.
octave:3>
*****************************************************************************************
Please help