In Development
Last Updated: 08 Sep 2025 11:46 by ADMIN
Scheduled for 2025 Q4 (Nov)

When loading a page configured with RadScriptManager, RadStyleSheetManager, and RadWindowManager using CDN and combined resources, a JavaScript runtime error occurs:

        <telerik:RadScriptManager runat="server" ID="RadScriptManager1"
            AsyncPostBackTimeout="500" EnablePageMethods="true" 
            EnableScriptCombine="true" LoadScriptsBeforeUI="true"
            EnableCdn="true" CdnSettings-TelerikCdn="Enabled" CdnSettings-CombinedResource="Enabled"
            EnableScriptLocalization="true"
            EnableScriptGlobalization="true" />

        <telerik:RadStyleSheetManager ID="RadStyleSheetManager1"
            runat="server"
            EnableStyleSheetCombine="true"
            CdnSettings-TelerikCdn="Enabled" CdnSettings-CombinedResource="Enabled" />

        <telerik:RadWindowManager runat="server" ID="radWindowManager" Style="z-index: 7001;" RenderMode="Lightweight" />
        <telerik:RadWindow runat="server" ID="RadWindowRecommendUs" EnableViewState="false"
            Behaviors="Close" VisibleOnPageLoad="false"
            Width="300px" Height="590px"
            InitialBehaviors="Pin" VisibleStatusbar="false" VisibleTitlebar="true" Modal="true" ReloadOnShow="true" Overlay="false" />

        <telerik:RadWindow ID="RadWindowFacebookLoginCompleteDetails" runat="server"
            Behaviors="Reload" Modal="true" VisibleStatusbar="false"
            Width="720" Height="750"
            IconUrl="/SITE/COMPONENTS/facebook/fb_icon_16X16.png"
             />

        <telerik:RadAjaxLoadingPanel ID="LoadingPanel1" runat="server" Style="width: 100%; min-height: 250px;" />    
Expected behavior:
The page should load without script registration conflicts.

Actual behavior:
The browser console shows an Uncaught Sys.InvalidOperationException, preventing proper execution of Telerik scripts.
Unplanned
Last Updated: 26 Jun 2019 09:25 by ADMIN

There is a bug with combining scripts and resources:

Combined CDN Request for Telerik Controls

You can reproduce the issue in the attached web site sample.

Unplanned
Last Updated: 07 Oct 2016 08:34 by ADMIN
<telerik:RadScriptManager ID="RadScriptManager1" runat="server">

                <CdnSettings TelerikCdn="Enabled" CombinedResource="Enabled"></CdnSettings>
                <Scripts>
                    <telerik:RadScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.Core.js" />
                    <telerik:RadScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQuery.js" />
                    <telerik:RadScriptReference Assembly="Telerik.Web.UI" Name="Telerik.Web.UI.Common.jQueryInclude.js" />
                </Scripts>
            </telerik:RadScriptManager>

            <script>
                function pageLoad() {
                    var grid = $find("<%=RadGrid1.ClientID%>");
                    alert(grid._showFilterMenu);
                }
            </script>


            <telerik:RadGrid ID="RadGrid1" runat="server" AllowPaging="True" Width="800px" OnNeedDataSource="RadGrid1_NeedDataSource">
                <MasterTableView AutoGenerateColumns="False" DataKeyNames="OrderID">
                    <Columns>
                        <telerik:GridBoundColumn DataField="OrderID" DataType="System.Int32"
                            FilterControlAltText="Filter OrderID column" HeaderText="OrderID"
                            ReadOnly="True" SortExpression="OrderID" UniqueName="OrderID">
                        </telerik:GridBoundColumn>
                        <telerik:GridDateTimeColumn DataField="OrderDate" DataType="System.DateTime"
                            FilterControlAltText="Filter OrderDate column" HeaderText="OrderDate"
                            SortExpression="OrderDate" UniqueName="OrderDate">
                        </telerik:GridDateTimeColumn>
                        <telerik:GridNumericColumn DataField="Freight" DataType="System.Decimal"
                            FilterControlAltText="Filter Freight column" HeaderText="Freight"
                            SortExpression="Freight" UniqueName="Freight">
                        </telerik:GridNumericColumn>
                        <telerik:GridBoundColumn DataField="ShipName"
                            FilterControlAltText="Filter ShipName column" HeaderText="ShipName"
                            SortExpression="ShipName" UniqueName="ShipName">
                        </telerik:GridBoundColumn>
                        <telerik:GridBoundColumn DataField="ShipCountry"
                            FilterControlAltText="Filter ShipCountry column" HeaderText="ShipCountry"
                            SortExpression="ShipCountry" UniqueName="ShipCountry">
                        </telerik:GridBoundColumn>
                    </Columns>
                </MasterTableView>
            </telerik:RadGrid>

			
Won't Fix
Last Updated: 21 Sep 2016 13:04 by ADMIN
The scripts of the controls are not combined in a single request, when the web.config key Telerik.ScriptManager.TelerikCdn.CombinedResource has value Enabled:

Steps to reproduce
1. Ad the following configuration in the web config and open a page containing RadControl.

<appSettings>
    <add key="Telerik.ScriptManager.TelerikCdn" value="Enabled"/>
    <add key="Telerik.ScriptManager.TelerikCdn.CombinedResource" value="Enabled" />
  </appSettings>

Result: The scripts are not combined.


Workaround:

Enable the script combining in the ScriptManager declaration:

    <telerik:RadStyleSheetManager runat="server">
        <CdnSettings CombinedResource="Enabled" TelerikCdn="Enabled" />
    </telerik:RadStyleSheetManager>
Declined
Last Updated: 01 Nov 2013 13:06 by Makoto
Created by: Coder
Comments: 3
Category: ScriptManager
Type: Bug Report
0
Hi all, 

when I update IIS, I get the following error on each page with Telerik. When I click F5 (refresh), the page loads well and dont appear anymore. I'm using Win 2003 and Win 2008 with IIS.

System.OverflowException: Arithmetic, casting or conversion operation overflowed or underflowed. (Exception from HRESULT: 0x80131516)
   at System.Reflection.PseudoCustomAttribute._GetSecurityAttributes(RuntimeModule module, Int32 token, Boolean assembly, Object[]& securityAttributes)
   at System.Reflection.PseudoCustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType, Boolean includeSecCa, Int32& count)
   at System.Reflection.CustomAttribute.GetCustomAttributes(RuntimeAssembly assembly, RuntimeType caType)
   at System.Reflection.RuntimeAssembly.GetCustomAttributes(Boolean inherit)
   at System.Web.UI.AssemblyCache.GetAjaxFrameworkAssemblyAttribute(Assembly assembly)
   at System.Web.UI.ScriptManager.get_DefaultAjaxFrameworkAssembly()
   at System.Web.UI.ScriptManager..ctor()
   at Telerik.Web.UI.RadScriptManager..ctor()

Regards,
Rastislav