title: RStudio Server returns "Cannot read property 'error' of null"
body: <p>When I try to go into RStudio Server (1.0.44), I get the following error in the browser:</p>
  
  <blockquote>
    <p>RStudio Initialization Error
    (TypeError) : Cannot read property 'error' of null</p>
  </blockquote>
  
  <p>This happens before logging in - it has the rotating clock thing for a minute and goes straight into that.</p>
  
  <p>I have tried all sorts of remedies, including restarting the server, rebooting, uninstalling and reinstalling RStudio server, changing the port settings, deleting the .RStudio folder in my home directory, etc. I checked the system log and that didn't seem to have anything relevant. There were a few errors, of course, but nothing after I got the error.</p>
  
  <p>Also, R works fine from the terminal and I have the latest version of both R and RStudio.</p>
  
  <p>Anyone have any ideas?</p>