title: Getting "unknown command" Exception calling the "minimize_window" method
body: <p>Example code:</p>
  
  <pre><code>from selenium import webdriver
  
  browser = webdriver.Chrome() 
  browser.minimize_window()
  </code></pre>
  
  <p>Returns the following exception:</p>
  
  <pre><code>  File "myScript.py", line 4, in &lt;module&gt;
      browser.minimize_window()
    File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 738, in minimize_window
      self.execute(Command.MINIMIZE_WINDOW)
    File "C:\Python27\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 312, in execute
      self.error_handler.check_response(response)
    File "C:\Python27\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 208, in check_response
      raise exception_class(value)
  selenium.common.exceptions.WebDriverException: Message: unknown command: session/8252be05ea571a2c623450db8ba097c0/window/minimize
  </code></pre>
  
  <p>Adding the line</p>
  
  <pre><code>print dir(browser)
  </code></pre>
  
  <p>Shows that <code>minimize_window()</code> is a listed function of browser. So what gives? Is this functionality just not compatible with Chrome?</p>
  
  <p>Python 2.7</p>