title: Error in RStudioGD() : Shadow graphics device error: r error 4 (R code execution error)
body: <p>I am trying to plot using Rstudio. But when I do, <code>plot(cars)</code> which is the basic function, I am getting an <code>Graphics Error in R</code>.<br>
  Here is what I have done :</p>
  
  <pre><code>&gt; plot(cars)
  Error in RStudioGD() : 
    Shadow graphics device error: r error 4 (R code execution error)
  </code></pre>
  
  <p>Please guide me through.</p>