[igraph] Cannot find packages with R version for Mavericks

[Silvia Solis]

Hi!

I just updated R in my Mac, I'm currently using Mavericks (OSX 10.9.3) and I just installed R 3.1.0 GUI 1.64 Mavericks build (6734).  The problem is I cannot acces any of the packages installed.  When I look for them with installed.packages I get the list of packages, but  cannot load them neither using the package manager function nor the "library()" command.

When I look for the library returns this:

> .libPaths()
[1] "/Users/Silvia/Library/R/3.1/library"                          
[2] "/Library/Frameworks/R.framework/Versions/3.1/Resources/library"

But I can't find this file (R.framework) in my computer files.

Can you help me?  I just downloaded the snowleopard.pkg just in case I have to go back to the previous version. 

Thanks for your help!

S