title: Selenium Server error: Unable to get browser
body: <p>I'm running Selenium Standalone Server 2.25 on Windows 7, with Internet Explorer 9 as a browser, and I'm getting this error for every test that requires opening the browser:</p>
  
  <pre><code>Selenium::WebDriver::Error::UnknownError:
         Unable to get browser (WARNING: The server did not provide any stacktrace information)
         Command duration or timeout: 10 milliseconds
         Build info: version: '2.25.0', revision: '17482', time: '2012-07-18 21:08:56'
         System info: os.name: 'Windows 7', os.arch: 'x86', os.version: '6.1', java.version: '1.7.0_07'
         Driver info: driver.version: EventFiringWebDriver
         Session ID: 356e9fc8-2d2b-4808-964c-4a1fea7415f9 (org.openqa.selenium.WebDriverException)
  </code></pre>
  
  <p>What am I doing wrong? The exact same information appears on the Selenium Server console.</p>