title: Can't Open Web forms for marketers Form Designer or Security Manager
body: <p>I have had WFFM running on a Sitecore instance for a while, but it has recently stopped working. When I go to "Form Designer" on an existing form, I get the standard Sitecore "The requested document was not found" page.</p>
  
  <blockquote>
    <p>Requested URL: /applications/modules/web</p>
    
    <p>User Name: sitecore\admin</p>
    
    <p>Site Name: shell</p>
    
    <p>If the page you are trying to display exists, please check that an
    appropriate prefix has been added to the IgnoreUrlPrefixes setting in
    the web.config.</p>
  </blockquote>
  
  <p>Note that the requested URL is stated as <code>/applications/modules/web</code> instead of <code>/applications/modules/web forms for marketers</code>.</p>
  
  <p>A lot of development has occurred on this site recently, so I'm not sure when exactly this started happening.</p>
  
  <p>Additional: info:</p>
  
  <ul>
  <li>Folder and file permissions are correct.</li>
  <li>I've tried reinstalling the WFFM package, and made sure that all the files are in place.</li>
  <li>Several processors have been added to the HttpBeginRequest pipeline, but I removed them all to test if they were the cause - they weren't.</li>
  <li>I haven't upgraded Sitecore since WFFM was working and the version is correct.</li>
  <li>No errors are logged</li>
  </ul>
  
  <p><em><strong>EDIT</em></strong></p>
  
  <p>This also seems to be affecting the Sitecore Security Editor:</p>
  
  <blockquote>
    <p>Requested URL: /appl</p>
    
    <p>User Name: sitecore\admin</p>
    
    <p>Site Name: shell</p>
    
    <p>If the page you are trying to display exists, please check that an
    appropriate prefix has been added to the IgnoreUrlPrefixes setting in
    the web.config.</p>
  </blockquote>
  
  <p><em><strong>EDIT 2</em></strong> </p>
  
  <p>Further investigation with this is making me think it is related to the Requested URL. I originally thought the the "Not found" page was displaying the requested url incorrectly. However, if I attempt to goto <code>mysite.com/sitecore/shell/applications/fake folder with spaces/fake page with spaces</code> I get this error message:</p>
  
  <blockquote>
    <p>Requested URL: /applications/fake folder with spaces/fake page with
    spaces</p>
    
    <p>User Name: sitecore\admin</p>
    
    <p>Site Name: shell</p>
    
    <p>If the page you are trying to display exists, please check that an
    appropriate prefix has been added to the IgnoreUrlPrefixes setting in
    the web.config.</p>
  </blockquote>
  
  <p>As you can see the Requested Url is correct in the error message. So in relation to my problem, I think maybe Sitecore is requesting the wrong URL in the first place.</p>
  
  <p>Additionally if I go to the go the following url by typing directly into the browser, then the Security Editor opens as expected:
  <code>mysite.com/sitecore/shell/Applications/Security/User-Editor</code></p>