title: Error 500: Command not handled exception on ALL XPages
body: <p>We have an issue where no <code>XPages</code> work on our server any longer.  I am not aware of any server changes; however, I am sure something had to have been done.  I have no clue where to look.  We cannot get any XPages to work through any browser - tested with IE, Firefox, and Chrome.  We just get "<code>Error 500: Command Not Handled Exception</code>".  I just created a blank db and added an <code>XPage</code> with "<code>Hello World</code>" and built the project.  This error appears when I try to access that <code>xpage</code> through the browser.</p>
  
  <pre><code>04/28/2015 09:07:34 AM  HTTP JVM: CLFAD0211E: Exception thrown. For more detailed information, please consult error-log-0.xml located in D:/Lotus/Domino/data/domino/workspace/logs
  
  04/28/2015 09:07:34 AM  HTTP JVM: CLFAD0246E: Exception occurred servicing request for: /test.nsf/testXpage.xsp - HTTP Code: 500. For more detailed information, please consult error-log-0.xml located in D:/Lotus/Domino/data/domino/workspace/logs
  
  04/28/2015 09:07:34 AM  HTTP Web Server: Command Not Handled Exception [/test.nsf/testXpage.xsp]
  </code></pre>
  
  <p><code>error-log-0.xml</code> shows those same errors:</p>
  
  <pre><code>CLFAD0211E: Exception thrown
  
  CLFAD0246E: Exception occurred servicing request for: /dev/samplepagersavestate.nsf/AllCars.xsp - HTTP Code: 500
  </code></pre>
  
  <p>Any help would be appreciated!</p>
  
  <p><strong>Server version</strong>: Windows 2012, 64 bit, Domino 9.0.1 FP2, HF590</p>