Aha!  Thank you - that's exactly what I was missing.

Heidi

On Sun, Jun 13, 2010 at 1:45 PM, Yan Zhou <zhouyan1014@gmail.com> wrote:

> Did you install the gfortran from the Tools webpage of R for mac os x
> developer page,
> http://r.research.att.com/tools/
> If not, install gfortran-42-5659.pkg first.
>
>

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