Maninfest throws an error, when I try to add and run a control Add-in in Navision

Hello every one,
I am a new software developer and just started to learn Navision. I want to add a very simple add-in which will desplay hello world in page. I followed a guide from internet exacly as it is there, but, when I am trying to run my page, I get this error "The control add-in manifest is not valid (The control add-in manifest does not include a script).", even if my manifest is not empty,and it looks like this

<?xml version="1.0" encoding="utf-8"?>
<Maninfest>
<ScriptsUrls>
<ScriptUrl>http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.9.1.min.js</ScriptUrl&gt;
</ScriptsUrls>
<Script>
<![CDATA[
$(document).ready(function()
{
$('#controlAddIn').append('Dummy, you did it');
});
]]>
</Script>
</Maninfest>

I even tryed to make a separate script instead of hardcoding it in manifest, but got the same error as previous. I have created an extesibility control, deployed and used it as it requires. Looking forward to hear from you, any help would be nice. Thank you in advance