title: Invalid viewstate information may be corrupted
body: <p>I keep getting the following error message when I run my vb.net web app:</p>
  
  <blockquote>
    <p>The state information is invalid for this page and might be corrupted.</p>
  </blockquote>
  
  <p><a href="http://www.box.net/signup/collablink/d_78538258/3243ef5f1f9ba" rel="nofollow">View full message here.</a></p>
  
  <p>After a good search, I came across <a href="http://support.microsoft.com/kb/323744" rel="nofollow">this Microsoft page</a>, which describes the problem exactly. The likely cause seems to be "scenario 2":</p>
  
  <blockquote>
    <p>Scenario 2: You modify your pages, which causes the shadow, copied files in the
    Temporary ASP.NET files folder to be regenerated. A user has a copy of
    the page that was requested before this change, and the user posts the
    page after the files in that folder were regenerated.</p>
  </blockquote>
  
  <p>But strangely- despite saying there is a hotfix, does not actually give the link to it.</p>
  
  <p>Can anyone suggest a fix?</p>
  
  <p>UPDATED: I appear to have prevented this error from happening by using <code>EnableEventValidation="False"</code> in the Page node of the markup <a href="http://renditionprotocol.blogspot.com/2007/01/state-information-is-invalid-for-this.html" rel="nofollow">as recommended here</a>. More of a work-around than a fix.</p>