title: rebuilding ajaxtoolkit error "Unrecognized attribute 'targetFramework'. Note that attribute names are case-sensitive."
body: <p>I am rebuilding ajaxtoolkit code after some changes in it on VS 2008 with 3.5 framework. Wehn I build samplewebsite it give subject error. When I check in web.config line was:</p>
  
  <p><strong><code>&lt;compilation debug="false" targetFramework="4"&gt;</code></strong></p>
  
  <p>I changed targetFraework to 3.5 but still getting same error, modifed line of code is:</p>
  
  <p><strong><code>&lt;compilation debug="false" targetFramework="3.5"&gt;</code></strong></p>
  
  <p>Please guide. </p>