Ferret Error

[Jose Antonio Gomez Tejedor <tejedor@xxxxxxxxxxxxx>]

    Hello,
    
    I have successfully installed ferret on my system. However, when running
'go tutorial', after some successfully plots, I get the error message:

SET DATA etopo120
 **TMAP ERR: Error in namelist record
             Didn't find: VARIABLE_RECORD 2
             Data set: fer_dsets/descr/etopo120.des
SET DATA etopo120
Command file, command group, or REPEAT execution aborted
                           
I am working on a HP-UX 10.20 system. Could some one give me an answer to my
problem?

          thank you,
          
              Jose A. Gomez Tejedor