title: Error installing PARTY package in R
body: <p>Newbie R user here.
  I wanted to install the party package in RStudio (Ver 0.98.507), but whether I install it directly from the CRAN repository or whether I save the file first and then load it in R, I get the following error message:</p>
  
  <pre><code>&gt; install.packages("party")
  Installing package into ‘C:/Users/Linda/Documents/R/win-library/3.1’
  (as ‘lib’ is unspecified)
  trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.1/party_1.0-15.zip'
  Content type 'application/zip' length 731049 bytes (713 Kb)
  opened URL
  downloaded 713 Kb
  
  package ‘party’ successfully unpacked and MD5 sums checked
  
  The downloaded binary packages are in
      C:\Users\Linda\AppData\Local\Temp\~~~~~~~\downloaded_packages
  &gt; library("party", lib.loc="C:/Users/Linda/Documents/R/win-library/3.1")
  Error in loadNamespace(j &lt;- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) : 
    object 'vI' not found
  Error: package or namespace load failed for ‘party’
  </code></pre>
  
  <p>I am unable to interpret the error message. 
  Every other package download and installation has worked so far though (caret, tree, rpart) so I am confused why this is not working.</p>