title: Rstudio encountered a Fatal Error on startup
body: <p>I recently upgraded R to 3.4.3 and RStudio to 1.1.383. After installation I got the <code>&lt;p&gt; R encountered a fatal error.&lt;/p&gt;The session was terminated</code> bug. </p>
  
  <p>I've followed the instructions <a href="https://support.rstudio.com/hc/en-us/articles/200488508-RStudio-Desktop-Will-Not-Start" rel="nofollow noreferrer">here</a> on fixing startup problems, <a href="https://stackoverflow.com/questions/38642091/java-script-alert-r-encountered-a-fatal-error-this-session-was-terminated">this</a> similar question on stack overflow, and other RStudio support forums and none have been able to fix the error.</p>
  
  <ul>
  <li>My R version is running fine in the terminal and is the most recent version</li>
  <li>When I remove the ".rstudio-desktop", ".Rpofile", and ".Rhistory" files and start Rstudio it no longer uses my themes but now encounters a "Fatal Session" bug but when I restart my session it just keeps getting the bug. </li>
  <li>I've restarted my computer and re-installed Rstudio with no luck with anything. </li>
  </ul>
  
  <p>I've included a diagnostic report <a href="https://gist.github.com/mattmills49/511a6e7033d7b9f74e8ea4b278a06597" rel="nofollow noreferrer">here</a>; there are a decent number of errors but I'm not sure what they really mean. </p>
  
  <p>Any help would be greatly appreciated. </p>