Sys is undefined

[programador]

Hello

I have a website, but when I run it does not work any telerik control. This is with .net framework 3.5, windows 2008 server.

Error:

//<![CDATA[
Sys.WebForms.PageRequestManager._initialize('RadScriptManager1', document.getElementById('form1'));
Sys.WebForms.PageRequestManager.getInstance()._updateControls(['tRadAjaxManager1SU'], [], [], 90);
//]]>

Sys.Application.add_init(function() {

web.config:

<?xml version="1.0"?>
<configuration>
    <configSections>
        <sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
            <sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
                <section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
                <sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
                    <section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere"/>
                    <section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
                    <section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
                    <section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>
                </sectionGroup>
            </sectionGroup>
        </sectionGroup>
    </configSections>
    <appSettings/>
    <connectionStrings>
        ...
    </connectionStrings>
    <system.web>
        <compilation debug="true">
            <assemblies>
                <add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
                <add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
                <add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
                <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
                <add assembly="System.Design, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
                <add assembly="System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
                <add assembly="System.Speech, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
                <add assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></assemblies>
        </compilation>
        <!-- <authentication mode="Windows"/> -->
        <customErrors mode="Off"/>
        <pages>
            <controls>
                <add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
                <add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            </controls>
        </pages>
        <httpHandlers>
            <remove verb="*" path="*.asmx"/>
            <add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/>
            <add path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" validate="false"/>
        </httpHandlers>
        <httpModules>
            <add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        </httpModules>
    </system.web>
    <system.codedom>
        <compilers>
            <compiler language="c#;cs;csharp" extension=".cs" warningLevel="4" type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
                <providerOption name="CompilerVersion" value="v3.5"/>
                <providerOption name="WarnAsError" value="false"/>
            </compiler>
            <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4" type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
                <providerOption name="CompilerVersion" value="v3.5"/>
                <providerOption name="OptionInfer" value="true"/>
                <providerOption name="WarnAsError" value="false"/>
            </compiler>
        </compilers>
    </system.codedom>
    <!--
        La sección system.webServer es necesaria para ejecutar ASPN.NET AJAX en Internet
        Information Services 7.0. No es necesaria para la versión anterior de IIS.
    -->
    <system.webServer>
        <validation validateIntegratedModeConfiguration="false"/>
        <modules>
            <remove name="ScriptModule"/>
            <add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
        </modules>
        <handlers>
            <remove name="WebServiceHandlerFactory-Integrated"/>
            <remove name="ScriptHandlerFactory"/>
            <remove name="ScriptHandlerFactoryAppServices"/>
            <remove name="ScriptResource"/>
            <add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
            <add name="Telerik_Web_UI_WebResource_axd" verb="*" preCondition="integratedMode" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource"/>
        </handlers>
    </system.webServer>
    <runtime>
        <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/>
                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
            </dependentAssembly>
            <dependentAssembly>
                <assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/>
                <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/>
            </dependentAssembly>
        </assemblyBinding>
    </runtime>
</configuration>

ASPX:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="BuscadorDocumentos.aspx.cs" Inherits="_Default" %>

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

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

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <style type="text/css">
        #form1
        {
            height: 361px;
        }
        </style>
</head>
<script type="text/javascript" language="javascript">

    function cbbCanal_IndexChanging(sender, eventArgs) {
        var cbbconducta = $find("<%= cbbConducta.ClientID%>");
        var item = eventArgs.get_item();
        if (item.get_index() > 0) {
            cbbconducta.requestItems(item.get_value(), false);
        }
    }

    function cbbCanal_Eliminar_IndexChanging(sender, eventArgs) {
        var cbbconducta = $find("<%= cbb_eliminar_conducta.ClientID%>");
        var item = eventArgs.get_item();
        if (item.get_index() > 0) {
            cbbconducta.requestItems(item.get_value(), false);
        }
    }

    function cbbCanal_Modificar_IndexChanging(sender, eventArgs) {
        var cbbconducta_modificar = $find("<%= cbb_modificar_conducta.ClientID %>");
        var item = eventArgs.get_item();
        if (item.get_index() > 0) {
            cbbconducta_modificar.requestItems(item.get_value(),false);
        }
    }
    function cbbConducta_Modificar_IndexChanging(sender, eventArgs) {
        var cbbdocumentos_modificar = $find("<%= cbb_modificar_documento.ClientID %>");
        var item = eventArgs.get_item();
        if (item.get_index() > 0) {
            cbbdocumentos_modificar.requestItems(item.get_value(),false);
        }
    }
    function validarUpload(source, arguments) {
        arguments.IsValid = $find('<%= uploader.ClientID %>').validateExtensions();
    }

    function validarUpload_Modificar(source, arguments) {
        arguments.IsValid = $find('<%= uploaderModificar.ClientID %>').validateExtensions;
    }

    function mostrarDiv(opcion) {
        document.getElementById("divAgregar").style.display = "none";
        document.getElementById("divModificar").style.display = "none";
        document.getElementById("divEliminar").style.display = "none";

        if (opcion == "Agregar") {
            document.getElementById("divAgregar").style.display = "";
        }
        if (opcion == "Modificar") {
            document.getElementById("divModificar").style.display = "";
        }
        if (opcion == "Eliminar") {
            document.getElementById("divEliminar").style.display = "";
        }
    }
</script>
<body>
    <form id="form1" runat="server">
    <telerik:RadAjaxLoadingPanel ID="RadAjaxLoadingPanel1" Runat="server"
        Skin="Default">
    </telerik:RadAjaxLoadingPanel>
    <telerik:RadScriptManager ID="RadScriptManager1" Runat="server">
    </telerik:RadScriptManager>
    <telerik:RadAjaxManager ID="RadAjaxManager1" runat="server"
        EnablePageHeadUpdate="False">
        <AjaxSettings>
            <telerik:AjaxSetting AjaxControlID="cbbCanal">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="cbbConducta"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="bt_buscador_buscar">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="grid_buscador_busqueda"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="grid_conductas">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="grid_conductas"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="bt_modificar_cargar">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="tbx_modificar_nombre"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                    <telerik:AjaxUpdatedControl ControlID="grid_modificar_conductas"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="grid_modificar_conductas">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="grid_modificar_conductas"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
            <telerik:AjaxSetting AjaxControlID="Button1">
                <UpdatedControls>
                    <telerik:AjaxUpdatedControl ControlID="grid_eliminar_buscar"
                        LoadingPanelID="RadAjaxLoadingPanel1" />
                </UpdatedControls>
            </telerik:AjaxSetting>
        </AjaxSettings>
    </telerik:RadAjaxManager>
    <telerik:RadWindowManager ID="RadWindowManager1" runat="server">
    </telerik:RadWindowManager>
    <telerik:RadTabStrip ID="RadTabStrip1" runat="server" SelectedIndex="0"
        MultiPageID="multiPage1">
        <Tabs>
            <telerik:RadTab runat="server" Text="Buscador" Selected="True">
            </telerik:RadTab>
            <telerik:RadTab runat="server" Text="Mantenedor">
            </telerik:RadTab>
        </Tabs>
    </telerik:RadTabStrip>

    <telerik:RadMultiPage runat="server" ID="multiPage1" Height="270px"
        Width="822px" SelectedIndex="0">
        <telerik:RadPageView runat="server" Height="100px" ID="pageBuscador"><br />
            <table>
                <tr>
                    <td colspan="2"><asp:Label runat="server" ID="lbl_buscador_titulo" Text="Seleccione una opcion de busqueda"></asp:Label>
                    </td>
                </tr>
                <tr>
                    <td><asp:Label runat="server" ID="lbl_buscador_canal" Text="Seleccione un Canal"></asp:Label>
                    </td>
                    <td><telerik:RadComboBox runat="server" ID="cbbCanal"
                            DataTextField="canal"
                            DataValueField="id_canal" OnClientSelectedIndexChanging="cbbCanal_IndexChanging"
                        ></telerik:RadComboBox>
                    </td>
                </tr>
                <tr>
                    <td><asp:Label runat="server" ID="lbl_buscador_conducta" Text="Seleccione una Conducta"></asp:Label></td>
                    <td><telerik:RadComboBox runat="server" ID="cbbConducta"
                            EnableVirtualScrolling="True" DropDownWidth="1000px" DataTextField="conducta"
                            DataValueField="id_conducta" OnItemsRequested="cbbConducta_ItemsRequested">
                        </telerik:RadComboBox>
                    </td>
                </tr>
                <tr>
                    <td colspan="2"><asp:Button runat="server" ID="bt_buscador_buscar" Text="Buscar"
                        onclick="bt_buscador_buscar_Click"/>
                    </td>
                </tr>
            </table>
            <br /><asp:Label runat="server" Text="Documentos encontrados: "></asp:Label>
            <br />
            <telerik:RadGrid ID="grid_buscador_busqueda" runat="server" AllowPaging="True"
                AllowMultiRowSelection="True" AutoGenerateColumns="False"
                OnItemDataBound="grid_buscador_busqueda_ItemDataBound"
                DataSourceID="sds_cargar_grid_consultas" GridLines="None"
                >
                <HeaderContextMenu CssClass="GridContextMenu GridContextMenu_Default"
                    EnableImageSprites="True">
                </HeaderContextMenu>
                <MasterTableView DataSourceID="sds_cargar_grid_consultas">
                    <CommandItemSettings ExportToPdfText="Export to Pdf" />
                    <Columns>
                        <telerik:GridBoundColumn DataField="nombre" HeaderText="Documento">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="pagina" HeaderText="Pagina">
                        </telerik:GridBoundColumn>
                        <telerik:GridHyperLinkColumn DataNavigateUrlFields="ruta" HeaderText="Ver"
                            Target="Vista_PDF.aspx" Text="Ver" UniqueName="linkColumn">
                        </telerik:GridHyperLinkColumn>
                    </Columns>
                </MasterTableView>
                <ClientSettings>
                    <Selecting AllowRowSelect="true" EnableDragToSelectRows="true"/>
                </ClientSettings>
            </telerik:RadGrid>
            <asp:SqlDataSource ID="sds_cargar_grid_consultas" runat="server"
                ConnectionString="<%$ ConnectionStrings:prod_credichile_20110117.1509_2 %>"
                SelectCommand="se_CargarGridConsulta" SelectCommandType="StoredProcedure">
                <SelectParameters>
                    <asp:ControlParameter ControlID="cbbCanal" Name="parIntIdCanal"
                        PropertyName="SelectedValue" Type="Int32"
                        ConvertEmptyStringToNull="true" />
                    <asp:ControlParameter ControlID="cbbConducta" Name="parIntIdConducta"
                        PropertyName="SelectedValue" Type="Int32"
                        ConvertEmptyStringToNull="true" />
                </SelectParameters>
            </asp:SqlDataSource>
        </telerik:RadPageView>
        <telerik:RadPageView runat="server" ID="pageMantenedor"><br />
            <table>
                <tr>
                <td><asp:Button runat="server" ID="btAgregar" Text="Agregar Docuento" OnClientClick="mostrarDiv('Agregar');return false;"/></td>
                <td><asp:Button runat="server" ID="btModificar" Text="Modificar Documento" OnClientClick="mostrarDiv('Modificar');return false;"/></td>
                <td><asp:Button runat="server" ID="btEliminar" Text="Eliminar Documento" OnClientClick="mostrarDiv('Eliminar');return false;"/></td>
                </tr>
            </table>
            <div runat="server" id="divAgregar" style="display:none"><br />
                <table>
                    <tr>
                        <td colspan="2">
                            <telerik:RadUpload runat="server" ID="uploader"
                            MaxFileInputsCount="1" AllowedFileExtensions=".pdf"
                            Localization-Add="Agregar" Localization-Select="Archivo"
                            Localization-Remove="Quitar" Localization-Delete="Borrar"
                            EnableTheming="True" ControlObjectsVisibility="None">
                                <Localization Add="Agregar" Delete="Borrar" Remove="Quitar" />
                            </telerik:RadUpload></td>
                    </tr>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_agregar_nombre" Text="Nombre"></asp:Label></td>
                        <td><telerik:RadTextBox runat="server" ID="tbx_agregar_nombre"></telerik:RadTextBox></td>
                    </tr>
                    <tr>
                        <td><asp:Button runat="server" id="bt_agregar" Text="Agregar"
                                onclick="bt_agregar_Click"/></td>
                        <td>
                            <asp:CustomValidator runat="server" ID="CustomValidator1"
                                Display="Dynamic" ClientValidationFunction="validarUpload">
                                <span>Extension Invalida</span>
                            </asp:CustomValidator>
                        </td>
                    </tr>
                </table>
                <br />
                <br />
                <asp:Label runat="server" ID="lbl_agregar_mensaje" Text="Seleccione conducta(s) asociada(s): "></asp:Label>
                <telerik:RadGrid ID="grid_conductas" runat="server"
                    AllowAutomaticDeletes="True" AllowAutomaticInserts="True"
                    AllowAutomaticUpdates="True" AllowFilteringByColumn="True"
                    AllowMultiRowSelection="True" AllowPaging="true" AllowSorting="False"
                    AutoGenerateColumns="False" DataSourceID="sds_cargar_grid_conductas"
                    GridLines="None" OnInit="grid_conductas_Init">
                    <MasterTableView DataKeyNames="id_conducta,id_canal"
                        DataSourceID="sds_cargar_grid_conductas">
                        <CommandItemSettings ExportToPdfText="Export to Pdf" />
                        <Columns>
                            <telerik:GridClientSelectColumn>
                            </telerik:GridClientSelectColumn>
                            <telerik:GridBoundColumn DataField="id_conducta" DataType="System.Int32"
                                HeaderText="id_conducta" ReadOnly="True" SortExpression="id_conducta"
                                UniqueName="id_conducta" Visible="false">
                            </telerik:GridBoundColumn>
                            <telerik:GridTemplateColumn HeaderText="Pagina" UniqueName="pagina">
                                <ItemTemplate>
                                    <telerik:RadNumericTextBox runat="server" MinValue="0"
                                        ID="tbx_pagina_agregar" NumberFormat-DecimalDigits="0">
                                    </telerik:RadNumericTextBox>
                                </ItemTemplate>
                            </telerik:GridTemplateColumn>
                            <telerik:GridBoundColumn DataField="conducta"
                                FilterListOptions="VaryByDataTypeAllowCustom" HeaderText="Conducta"
                                SortExpression="conducta" UniqueName="conducta">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="id_canal" HeaderText="ID_Canal"
                                ReadOnly="True" SortExpression="id_canal" UniqueName="id_canal"
                                Visible="false">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="canal"
                                FilterListOptions="VaryByDataTypeAllowCustom" HeaderText="Canal"
                                SortExpression="canal" UniqueName="canal">
                            </telerik:GridBoundColumn>
                        </Columns>
                    </MasterTableView>
                    <ClientSettings>
                        <Selecting AllowRowSelect="true" />
                    </ClientSettings>
                </telerik:RadGrid>
                <asp:SqlDataSource ID="sds_cargar_grid_conductas" runat="server"
                    ConnectionString="<%$ ConnectionStrings:prod_credichile_20110117.1509_2 %>"
                    SelectCommand="se_CargarConductasGrid" SelectCommandType="StoredProcedure">
                </asp:SqlDataSource>
            </div>
            <div runat="server" id="divModificar" style="display:none"><br />
                <table>
                    <tr>
                        <td><asp:Label runat="server" id="lbl_modificar_canal" Text="Seleccione un Canal"></asp:Label></td>
                        <td><telerik:RadComboBox runat="server" id="cbb_modificar_canal"
                            OnClientSelectedIndexChanging="cbbCanal_Modificar_IndexChanging"
                            DataTextField="canal" DataValueField="id_canal"></telerik:RadComboBox>
                        </td>
                    </tr>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_modificar_conducta" Text="Seleccione una Conducta"></asp:Label></td>
                        <td><telerik:RadComboBox runat="server" ID="cbb_modificar_conducta"
                            EnableVirtualScrolling="true" OnItemsRequested="cbb_modificar_conducta_ItemsRequested"
                            DropDownWidth="1000px" OnClientSelectedIndexChanging="cbbConducta_Modificar_IndexChanging"></telerik:RadComboBox>
                        </td>
                    </tr>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_modificar_documento" Text="Seleccione un Documento"></asp:Label></td>
                        <td><telerik:RadComboBox runat="server" ID="cbb_modificar_documento"
                            EnableVirtualScrolling="true" OnItemsRequested="cbb_modificar_documento_ItemsRequested"
                            ></telerik:RadComboBox>
                        </td>
                    </tr>
                    <tr>
                        <td><asp:Button runat="server" ID="bt_modificar_cargar" Text="Cargar Documento"
                                OnClick="bt_modificar_cargar_Click"/></td>
                        <td><asp:Button runat="server" ID="bt_modificar" Text="Modificar"
                                OnClick="bt_modificar_Click"/></td>
                        <td>
                            <asp:CustomValidator runat="server" ID="CustomValidator2"
                                Display="Dynamic" ClientValidationFunction="validarUpload_Modificar">
                                <span>Extension Invalida</span>
                            </asp:CustomValidator>
                        </td>
                    </tr>
                </table>
                <br />
                <table>
                    <tr>
                        <td colspan="2"><telerik:RadUpload runat="server" ID="uploaderModificar"
                            MaxFileInputsCount="1" EnableTheming="True" AllowedFileExtensions=".pdf"
                            Localization-Add="Agregar" Localization-Select="Archivo"
                            Localization-Remove="Quitar" Localization-Delete="Borrar"
                            ControlObjectsVisibility="None"
                            >
                                <Localization Add="Agregar" Delete="Borrar" Remove="Quitar" />
                            </telerik:RadUpload></td>
                    </tr>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_modificar_nombre" Text="Nombre"></asp:Label></td>
                        <td><telerik:RadTextBox runat="server" ID="tbx_modificar_nombre"></telerik:RadTextBox></td>
                    </tr>
                </table>
                <asp:Label runat="server" ID="lbl_modificar_mensaje" Text="Seleccione conductas asociadas: "></asp:Label>
                <br />
                <telerik:RadGrid runat="server" id="grid_modificar_conductas"
                    AllowAutomaticDeletes="true" AllowAutomaticInserts="true"
                    AllowAutomaticUpdates="true" AllowFilteringByColumn="true"
                    AllowMultiRowSelection="true" AutoGenerateColumns="false"
                    DataSourceID="sds_cargar_grid_modificar" OnInit="grid_conductas_Init">
                    <MasterTableView AllowPaging="true" DataSourceID="sds_cargar_grid_modificar">
                        <Columns>
                            <telerik:GridClientSelectColumn>
                            </telerik:GridClientSelectColumn>
                            <telerik:GridBoundColumn DataField="id_documento" HeaderText="id_documento"
                                Visible="false">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="id_conducta" HeaderText="id_conducta"
                                Visible="false">
                            </telerik:GridBoundColumn>
                            <telerik:GridTemplateColumn>
                                <ItemTemplate>
                                    <telerik:RadNumericTextBox runat="server" id="tbx_pagina_modificar"
                                        DbValue='<%# Bind("pagina")%>' MinValue="0" NumberFormat-DecimalDigits="0">
                                    </telerik:RadNumericTextBox>
                                </ItemTemplate>
                            </telerik:GridTemplateColumn>
                            <telerik:GridBoundColumn DataField="conducta" UniqueName="conducta" HeaderText="Conducta">
                            </telerik:GridBoundColumn>
                        </Columns>
                    </MasterTableView>
                    <ClientSettings>
                        <Selecting AllowRowSelect="true"/>
                    </ClientSettings>
                </telerik:RadGrid>
                <asp:SqlDataSource ID="sds_cargar_grid_modificar" runat="server"
                    ConnectionString="<%$ ConnectionStrings:prod_credichile_20110117.1509_2 %>"
                    SelectCommand="se_CargarConductas_Modificar"
                    SelectCommandType="StoredProcedure">
                    <SelectParameters>
                        <asp:ControlParameter ControlID="cbb_modificar_documento"
                            Name="parIntIdDocumento" PropertyName="SelectedValue" Type="Int32" />
                    </SelectParameters>
                </asp:SqlDataSource>
            </div>
            <div runat="server" id="divEliminar" style="display:none"><br />
                <table>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_eliminar_canal" Text="Seleccione un Canal" /></td>
                        <td><telerik:RadComboBox runat="server" ID="cbb_eliminar_canal"
                                DataTextField="canal" DataValueField="id_canal"
                                OnClientSelectedIndexChanging="cbbCanal_Eliminar_IndexChanging"></telerik:RadComboBox>
                        </td>
                    </tr>
                    <tr>
                        <td><asp:Label runat="server" ID="lbl_eliminar_conducta" Text="Seleccione una Conducta"></asp:Label></td>
                        <td><telerik:RadComboBox runat="server" ID="cbb_eliminar_conducta"
                                EnableVirtualScrolling="True" DropDownWidth="1000px"
                                DataTextField="conducta" DataValueField="id_conducta"
                                OnItemsRequested="cbbConducta_Eliminar_ItemsRequested"></telerik:RadComboBox>
                        </td>
                    </tr>
                    <tr>
                        <td ><asp:Button runat="server" ID="bt_eliminar" Text="Eliminar"
                        onclick="bt_eliminar_Click"/>
                        </td>
                        <td><asp:Button runat="server" ID="Button1" Text="Buscar"
                        onclick="bt_buscador_buscar_eliminar_Click"/>
                        </td>
                    </tr>
                </table>
                <br /><asp:Label ID="Label1" runat="server" Text="Documentos encontrados: "></asp:Label>
                <br />
                <telerik:RadGrid ID="grid_eliminar_buscar" runat="server"
                    AllowMultiRowSelection="True" AllowPaging="True" AllowSorting="False"
                    AutoGenerateColumns="False" DataSourceID="sds_cargar_grid_documentos"
                    GridLines="None">
                    <HeaderContextMenu CssClass="GridContextMenu GridContextMenu_Default"
                        EnableImageSprites="True">
                    </HeaderContextMenu>
                    <MasterTableView DataSourceID="sds_cargar_grid_documentos">
                        <CommandItemSettings ExportToPdfText="Export to Pdf" />
                        <Columns>
                            <telerik:GridClientSelectColumn>
                            </telerik:GridClientSelectColumn>
                            <telerik:GridBoundColumn DataField="id_documento" HeaderText="id_documento"
                                Visible="false">
                            </telerik:GridBoundColumn>
                            <telerik:GridBoundColumn DataField="nombre" HeaderText="Documento">
                            </telerik:GridBoundColumn>
                        </Columns>
                    </MasterTableView>
                    <ClientSettings>
                        <Selecting AllowRowSelect="true" />
                    </ClientSettings>
                </telerik:RadGrid>
                <asp:SqlDataSource ID="sds_cargar_grid_documentos" runat="server"
                    ConnectionString="<%$ ConnectionStrings:prod_credichile_20110117.1509_2 %>"
                    SelectCommand="se_CargarDocumentosGrid" SelectCommandType="StoredProcedure">
                    <SelectParameters>
                        <asp:ControlParameter ControlID="cbb_eliminar_conducta" DefaultValue="0"
                            Name="parIntIdConducta" PropertyName="SelectedValue" Type="Int32" />
                    </SelectParameters>
                </asp:SqlDataSource>
            </div>
        </telerik:RadPageView>
    </telerik:RadMultiPage>
    </form>
</body>
</html>

Search the internet and found some possible solutions:

Adding RadControls for ASP.NET Ajax

But none has worked for me, please help

Best regards

[Simon]

Hi programador,

Please verify that all settings described in this blog post are applied in your setup.

I hope this helps.

Kind regards,
Simon
the Telerik team