[gradsusr] opengrads extensions not working on Mac OSX?

[Henrique M. J. Barbosa - IFUSP]

Dear All,

I'm using the latest version of opengrads (v2.1.a2.oga.1) on a Mac with OSX
El Captain (10.11.2). I downloaded the pre-compiled bundle from
source-forge, as usual. In this case, the file was:

grads-2.1.a2.oga.1-bundle-x86_64-apple-darwin13.2.0.tar.gz

Everything works fine except that when I try to execute any of the
extensions (e.g. re or re2 for regriding in 2D) grads quits unexpectedly.
It does not event issue any error message at all!! I also tried other
extensions, for instance for calculating radial velocity, and the result is
the same.

Is there any trick to make the extensions work on a Mac?

Not sure if this is related, but although the file I downloaded says
"x86_64", the folders inside say they are i386.

Thanks in advance,

Henrique

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