ASP.NET Ajax client-side framework failed to load. when put the ScriptManager on a blank page
<p>I have an error <strong>Microsoft JScript runtime error: ASP.NET Ajax client-side framework failed to load.</strong> on a blank page using masterpage</p>

<p><img src="http://i.stack.imgur.com/DKtvE.jpg" alt="enter image description here"></p>

   

<pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
&lt;head runat="server"&gt;
    &lt;title&gt;&lt;/title&gt;
&lt;/head&gt;
&lt;body&gt;
    &lt;form id="form1" runat="server"&gt;

    &lt;div&gt;

    &lt;/div&gt;
    &lt;asp:ScriptManager ID="ScriptManager1" runat="server" EnableCdn="True"&gt;
    &lt;/asp:ScriptManager&gt;
    &lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>This is what it render it the end</p>

<pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;

&lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
&lt;head&gt;&lt;title&gt;

&lt;/title&gt;&lt;/head&gt;
&lt;body&gt;
    &lt;form method="post" action="WebForm2.aspx" id="form1"&gt;
&lt;div class="aspNetHidden"&gt;
&lt;input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" /&gt;
&lt;input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" /&gt;
&lt;input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUJNjE2OTgwNTY5ZGTfWA/dEX85PXBlbkKsVxeLKyIn+mJQ9piW5cbeNE+qww==" /&gt;
&lt;/div&gt;

&lt;script type="text/javascript"&gt; 
//&lt;![CDATA[
var theForm = document.forms['form1'];
if (!theForm) {
    theForm = document.form1;
}
function __doPostBack(eventTarget, eventArgument) {
    if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
    }
}
//]]&gt;
&lt;/script&gt;


&lt;script src="http://ajax.microsoft.com/ajax/4.0/2/WebForms.js" type="text/javascript"&gt;&lt;/script&gt;


&lt;script src="/ScriptResource.axd?d=6x_aX-LOcgUU-O_K6nM7ST5ViC_naT1e4_j-CY35ASRLpcKYpiapwTARuePHvx3llP-Xhl_AG_ubpM1BzkM5iyn9ThB3m7lmXKvkck0cxTcYiT-VbeKgamKxp9EwxBUyIQN6sSCU9SQm3tMtmzQWRg2&amp;amp;t=ffffffffbad362a4" type="text/javascript"&gt;&lt;/script&gt;
&lt;script type="text/javascript"&gt; 
//&lt;![CDATA[
if (typeof(Sys) === 'undefined') throw new Error('ASP.NET Ajax client-side framework failed to load.');
//]]&gt;
&lt;/script&gt;

&lt;script src="/ScriptResource.axd?d=khKEuZ4oUqBYvQxJ1ISpPVIW8_AWWc907q5_v74DI2ruWKTJpldq2osxPkAZ__hffe1Q6HTQUyTbL3Q1mD6MX7V65O5ibxKwb4NvN6ycdZ8vEJ-bz51MO-8uoaP2xioK6npm5n8vldI1d0sOCnH6yw2&amp;amp;t=ffffffffbad362a4" type="text/javascript"&gt;&lt;/script&gt;

    &lt;div&gt;

    &lt;/div&gt;
    &lt;script type="text/javascript"&gt; 
//&lt;![CDATA[
Sys.WebForms.PageRequestManager._initialize('ScriptManager1', 'form1', [], [], [], 90, '');
//]]&gt;
&lt;/script&gt;

    &lt;/form&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>The problems might be that i used to have AjaxControlToolkit in my project but later i use jquery instead. so somewhere in the project might try to add Ajaxcontroltoolkit which i can't find it. i don't know how to fix this error. i have tried to add bin file of ajaxcontroltoolkit back but it seems to not work.</p>
