cn_and_xyn.ncl NclIChangeWorkstation error

Hi all in the list,
I was wondering if anyone could give me some hint about an error I get when running the tutorial script: cn_and_xyn.ncl from:

http://www.srnr.arizona.edu/ngdoc/ng4.0.1/ug/ncl/tutor/cn_and_xyn.ncl

pier@macbook ~/Documenti/Tutorial/NCL/Script $ ncl cn_and_xyn.ncl
Copyright (C) 1995-2010 - All Rights Reserved
University Corporation for Atmospheric Research
NCAR Command Language Version 5.2.0
The use of this software is governed by a License Agreement.
See http://www.ncl.ucar.edu/ for more details.
fatal:_NclIChangeWorkstation: workstation parameter does not exist as an HLU workstation
fatal:Execute: Error occurred at or near line 291 in file cn_and_xyn.ncl

X11 workstation shows the plot correctly whereas ps and ncgm files, although created, turn up to be blank when opened with gv and idt.

Thanks for any help,
Pier

      
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Received on Thu Aug 26 13:01:08 2010