FWIW, I installed the 32 bit binary of R-2.11.0 after removing the (setq  
inferior-R-program-name "C:\\Program
Files\\R\\R-2.11.0-x64\\bin\\Rterm") from my .emacs file. Emacs/ess finds  
the 32-bit version of Rterm as before.

Ideally, would like to be able to choose from 32-bit and 64-bit version  
within emacs.

Thanks for any insights. --Dale

On Apr 23, 2010 8:32am, Dale.W.Steele@gmail.com wrote:
> On Apr 22, 2010 10:39pm, "RICHARD M. HEIBERGER" rmh@temple.edu> wrote:

> >
> > Is
> >
> > C:\Progra~1\R\R-2.11.0-x64\bin
> >
> > in your Windows PATH environment variable?
> >

> No. Emacs/ESS has worked with previous 32 bit versions of R without  
> manually setting a PATH

> >
> > You say "R works fine", but what does that mean? Did you start R by  
> typing
> >
> > Rterm at the DOS or cygwin prompt? Did you click the RGUI icon on the  
> desktop?
> >
> > Or start R some other way?
> >

> by clicking on the RGUI icon

> >
> > Do you have previous versions of R on the machine?
> >

> I uninstalled previous versions prior to installing.

> >
> > Rich

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