get ferret running

[Muyin Wang <muyin@xxxxxxxxxxxxxxxxxxx>]

Hello, I am new at PMEL, and trying to get ferret running on my machine.
After following the steps to set up the computer environment, I still
could not get it running. Here is my problem:

 The FERRET environment has not been properly set up.
  (The environment variable FER_DIR is not defined)

  Have you executed "source your_system_path/ferret_paths" ?

And here is what in my my_ferret_paths file:

  setenv FER_DESCR      "$FER_DESCR $HOME/ferret"
   setenv FER_GRIDS      "$FER_GRIDS $HOME/ferret/grids"
   setenv FER_GO         ". $FER_GO $HOME/ferret"
   setenv FER_DIR        "$FER_DIR  $HOME/ferret"
   setenv FER_PALETTE    "$FER_PALETTE $HOME/ferret/palettes"
   setenv FER_DATA       ". $FER_DATA /home/aegir2/cdf"


Any suggestion on what I supposed to do? Thanks.
Muyin