[R] R: unable to install packages

[Vaz Joao (QPT TO EPA)]

Hi,

I'm running R version 2.8.1 on Windows and I'm having quite a lot of trouble just to install package RODBC.

When I run command install.packages("RODBC"), the following error message appears:

Warning: unable to access index for repository http://cran.pt.r-project.org/bin/windows/contrib/2.8

Then it stops and doesn't install anything. I've also tried downloading from several mirrors with no success. Is this normal? Am I doing anything wrong?

Thanks,
Joao Vaz