Star-up Question

I can't load a Goo file

 garcez@kh0ndor:~/goo_dir$ goo
;;; GOO
;;; JONATHAN BACHRACH
;;; MIT AI Lab
;;; JAN 16, 2003
;;; 
;;; VERSION = 0.153
;;; ROOT    = /home/garcez/goo_dir/

goo/user 0<= (load "ex.goo" 'goo/usr)
ERROR: Failed to open ex.goo.
Type ",restart N" to restart execution:
1. Return to interpreter level 1.
2. Return to interpreter level 0.
3. Exit the top-level interpreter.
goo/user 1<= 


Can anyone tell me what I'm doing wrong.
Is the Path for Root , I have:
Export GOO_ROOT=/home/garcez/goo_dir/