title: Selenenium error: WebDriverException: Message: The browser appears to have exited before we could connect
body: <p>I am attempting to get Selenium to work on my Linux mint installation. In the Python3 terminal, I type:</p>
  
  <pre><code>from selenium import webdriver
  firefox = webdriver.Firefox()
  </code></pre>
  
  <p>The second line immediately gives me the following error message:</p>
  
  <pre><code>selenium.common.exceptions.WebDriverException: Message: The browser appears to have exited before we could connect. If you specified a log_file in the FirefoxBinary constructor, check it for details.
  </code></pre>
  
  <p>I thought it may be an old version of selenium, so I ran:</p>
  
  <pre><code>pip3 install selenium --upgrade
  </code></pre>
  
  <p>It confirms that Selenium is up to date. I'm using Linux Mint, so I ran apt-get to see if there is an upgrade for Firefox. There isn't. Restarted and tried selenium again at the Python command line, same error.</p>
  
  <p>I'm running Python 3.4, Linux Mint 17.2 (32-bit), Firefox 47.0, selenium 2.53.5. Is this just an incompatibility between selenium and Firefox, or should I be looking somewhere else to figure it out?</p>