title: Problem loading the plyr package
body: <p>I use R 2.13.1 and have unsuccessfully tried to load the package "plyr 1.6" in R. I have manually installed it into a directory "~/R/library".
  My code is:</p>
  
  <pre><code>.libPaths("~/R/library")
   library(plyr)
  </code></pre>
  
  <p>I get the message:</p>
  
  <blockquote>
    <p>Error in library(plyr) : 'plyr' is not a valid installed package</p>
  </blockquote>
  
  <p>It works fine with other packages ("chron", "zoo", "ismev", "Lmoments"), but not for the "plyr" package, and I have no idea what is goin on. I have tried installing and loading earlier versions of "plyr", but with the same result.</p>
  
  <p>I appreciate any help a lot since I am stuck!
  Regards
  Sisse</p>