I am getting JScript error as "Microsoft JScript runtime error: 'Telerik' is undefined" while running my project.
I have just tried configuring the project from the menu bar 'Telerik->Rad controls for asp.net ajax->configure project' and it gives me this error.

Please find below my webconfig file. I could find some threads in Telerik forum about trouble shooting for the same but they didn't solve my issue.
I am using .net 4.0 version.

```
<?xml version="1.0"?>
<configuration>
    <connectionStrings>
        <add name="xxx" connectionString="Data Source=xxx;Initial Catalog=xxx;Integrated Security=False; User ID=abc; Password=xxxx;" />     
    </connectionStrings>
    <appSettings>
        <add key="Telerik.Skin" value="Default" />
        <add key="Telerik.ScriptManager.TelerikCdn" value="Enabled" />
        <add key="Telerik.StyleSheetManager.TelerikCdn" value="Enabled" />            
    </appSettings>
    <system.web>
        <compilation debug="true" targetFramework="4.0">
            <assemblies>
                <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
                <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
                <add assembly="System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /></assemblies></compilation>
        <pages>
            <controls>
                <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
            </controls>
        </pages>
        <httpHandlers>
            <add path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" validate="false" />
            <add path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" validate="false" />
            <add path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" validate="false" />
            <add path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" validate="false" />
            <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false" />    
        </httpHandlers>
        <httpModules>
            <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" />
            <add name="RadCompression" type="Telerik.Web.UI.RadCompression" />
        </httpModules>
    </system.web>
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false" />
        <modules runAllManagedModulesForAllRequests="true">
            <remove name="RadUploadModule" />
            <add name="RadUploadModule" type="Telerik.Web.UI.RadUploadHttpModule" preCondition="integratedMode" />
            <remove name="RadCompression" />
            <add name="RadCompression" type="Telerik.Web.UI.RadCompression" preCondition="integratedMode" />
        </modules>
        <handlers>
            <remove name="ChartImage_axd" />
            <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" />
            <remove name="Telerik_Web_UI_SpellCheckHandler_axd" />
            <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" />
            <remove name="Telerik_Web_UI_DialogHandler_aspx" />
            <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" />
            <remove name="Telerik_RadUploadProgressHandler_ashx" />
            <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" />
            <remove name="Telerik_Web_UI_WebResource_axd" />
            <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" />
        </handlers>
    </system.webServer>
</configuration>

```