ASP.NET Ajax client-side framework failed to load. on RadTilelist

2 posts, 0 answers
  1. Chat
    Chat avatar
    1 posts
    Member since:
    Aug 2012

    Posted 22 Oct 2013 Link to this post

    Hello guys

    I have a problem for RadTilelist on first load.

    when I run Program  it show an error like this

    " Line: 48
    Error: ASP.NET Ajax client-side framework failed to load."

    Line: 54
    Error: 'Sys' is undefined

    I find some solution on other forum but it's not solution to solve my this problem.
    even though :
    Add this code location  into web.config

    it not work for me.

    anyone can help me?

    I develop project on ms visual studio 2010
    database oracle
    my localmachine is win XP
    and I use telerik controls version 2013 Q3

    My example code is.

    <%@ Register assembly="Telerik.Web.UI" namespace="Telerik.Web.UI" tagprefix="telerik" %>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">

    <html xmlns="">
    <head runat="server">
        <link href="css/TLT.css" rel="stylesheet" type="text/css" />
        <style type="text/css">
                width: 100%;
        <form id="form1" runat="server">
        <telerik:RadScriptManager ID="RadScriptManager1" runat="server">
                <asp:ScriptReference Assembly="Telerik.Web.UI"
                <asp:ScriptReference Assembly="Telerik.Web.UI"
                <asp:ScriptReference Assembly="Telerik.Web.UI"
            <table class="style1">
        <telerik:RadGrid ID="RadGrid1" runat="server" Skin="Web20">
                        <telerik:RadTileList ID="RadTileList1" runat="server">
                                <Title Text= "test"></Title>
                              <Title Text= "test02"></Title>

    Please Help me

    Best regard,

  2. Angel Petrov
    Angel Petrov avatar
    1002 posts

    Posted 25 Oct 2013 Link to this post

    Hi Chat,

    I am sorry to say but the information provided is insufficient for us to determine the root cause of the problem. There are a number of reasons which may cause this behavior and in order to resolve the issue I would like to ask you to provide us with a sample project which replicates it. In most of the cases the problem is caused by an unregistered handler in the web.config file. Could you ensure that this is not the case? Please give the approaches listed in this forum post a try and test whether some of them help to resolve the problem. Additionally if the issue is reproducible only in IE10 you can install the .NET fix mentioned in this sticky thread.

    Angel Petrov
    If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to the blog feed now.
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