In System.setProperty("webdriver.gecko.driver", "<Path to your WebDriver>"), what is meant by "Path to your WebDriver"?
<p>I have this exception since I upgraded to 3.0 beta with Firefox.</p>

<blockquote>
  <p>Exception in thread "main" java.lang.IllegalStateException: The path to the driver executable must be set by the webdriver.gecko.driver system property</p>
</blockquote>