title: :not fire any event in updatepanel
body: <p>i have a website with <code>.Net2</code> . I Changed it built target to <code>.Net4.5</code> and changed it pool to <code>.net 4</code> from <code>IIS</code>. but any event in <code>updatepanel</code> not firing(such as <code>butun_click</code> or <code>dropdown_Changed</code> and ...) all of them work correctly on .net 2.
  any idea?</p>
  
  <p><strong>Edit:
  i delete:</strong></p>
  
  <pre><code>        &lt;section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/&gt;
  
    &lt;section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/&gt;
  
              &lt;section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/&gt;
  
    &lt;section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/&gt;
            &lt;section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/&gt;
  </code></pre>
  
  <p>from web.config becuase duplicated error.</p>