title: Selenium missing or invalid 'entry.level' Error
body: <p>I'm trying to run a selenium test which should work just fine (hasn't changed and used to work) but I'm getting this strange error.</p>
  
  <pre><code>System.InvalidOperationException : unknown error: cannot determine loading status
  from unknown error: missing or invalid 'entry.level'
    (Session info: chrome=63.0.3239.84)
    (Driver info: chromedriver=2.25.426923 (0390b88869384d6eb0d5d09729679f934aab9eed),platform=Windows NT 10.0.15063 x86_64)
     at OpenQA.Selenium.Remote.RemoteWebDriver.UnpackAndThrowOnError(Response errorResponse) in c:\Projects\WebDriver\trunk\dotnet\src\WebDriver\Remote\RemoteWebDriver.cs:line 1015
     at OpenQA.Selenium.Remote.RemoteWebDriver.Execute(String driverCommandToExecute, Dictionary`2 parameters) in c:\Projects\WebDriver\trunk\dotnet\src\WebDriver\Remote\RemoteWebDriver.cs:line 849
     at OpenQA.Selenium.Remote.RemoteWebElement.Click() in c:\Projects\WebDriver\trunk\dotnet\src\WebDriver\Remote\RemoteWebElement.cs:line 337
  ...
  </code></pre>
  
  <p>What is this "missing or invalid 'entry.level'" error and how do I fix it?</p>