title: Running into an error when attempting to load MASS Package in R Studio but it loads fine in base R
body: <p>When I run <code>library(MASS)</code> I get the following error in R Studio:</p>
  
  <pre><code>Error in FUN(X[[i]], ...) : 
  cannot open file 'C:/Users/User/Documents/R/win-library/3.3/MASS/data/Rdata.rdb': No such file or directory
  </code></pre>
  
  <p>Yet it loads fine if I run the command in base R.</p>
  
  <p>I can confirm as per the error message that the file (and the data folder) do not exist. But I've tried re-installing the MASS package (with apparent success) and it still doesn't appear to work.</p>
  
  <p>I'm running R v3.3.1 both in base and in R Studio.</p>