title: ff package on a server... read.table.ffdf "cannot change working directory"
body: <p>This may be something simple but I have search a LOT and can't find how to fix it.</p>
  
  <p>I am using Rstudio 2.15.1 on a server because we use big data sets and the server has more ram
  to deal with it.
  I want to load a csv file with </p>
  
  <pre><code>x &lt;- read.csv.ffdf(file=file.path(getwd(),"test.csv"))
  </code></pre>
  
  <p>from the "ff" package and in the pc it works fine, but in the server I get  the message </p>
  
  <blockquote>
    <p>Error in setwd(dfile) : cannot change working directory</p>
  </blockquote>
  
  <p>Does anyone has any idea on how can I fix this?</p>