[gradsusr] Problems with grads-2.0.a9.oga.1 and missing Darwin directory

[Ileana Blade]

I am trying to run the new grads version on a MAC OS 10.5.8 .  
Previously running grads-2.0.a7.1. 		
I downloaded the latest bundle grads-2.0.a9.oga.1.
However when I try to run the new grads it complains about a missing  
directory.

[ileana-imac:/usr/local/grads-2.0.a9.1] iblade# ./grads
grads: missing required directory
  </usr/local/grads-2.0.a9.1/Darwin/i386>
      --->  at ./grads line 157.

What did I do wrong ?

Thanks a lot

Ileana