title: Custom Application page Ajaxtoolkit error in Sharepoint 2010
body: <p>I recently migrated MOSS 2007 site to sharepoint 2010. The MOSS 2007 site included a custom application page. With IP address this page is working fine. I have deployed the dll in gac and placed the necessary forms in layouts folder. But using Internat or intranet dns I am getting below error:  </p>
  
  <pre><code> An error occurred during the compilation of the requested file, or one of its dependencies. The type 'AjaxControlToolkit.SliderExtender' exists in both 'c:\Windows\assembly\GAC_MSIL\AjaxControlToolkit\3.0.30930.28736__28f01b0e84b6d53e\AjaxControlToolkit.dll' and 'c:\Windows\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\root\e2b85a3a\aefa6379\assembly\dl3\6cf6a9f3\d0ee2c06_53facd01\AjaxControlToolkit.DLL' 
  </code></pre>
  
  <p>If I delete the dll placed in Temporary ASp.net folder it says not able to find the dll in the temporary folder url. N if i delete gac dll it looks for the dll in gac n throws the same error of unable to find.
   I have provided below ajax entry in web.config but its still showing me the same error.</p>
  
  <pre><code>  &lt;add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit, Version=3.0.30930.28736, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e" tagPrefix="ajaxToolkit"/&gt;
        &lt;/controls&gt;
  </code></pre>
  
  <p>and in  tag i added the assembly entry</p>