FIX: RadScriptManager compatibility issues with Ajax Control Toolkit

Thread is closed for posting
2 posts, 0 answers
  1. Telerik Admin
    Telerik Admin avatar
    1697 posts
    Member since:
    Oct 2004

    Posted 25 Jun 2010 Link to this post

    Problem: The RadScriptManager is incompatible with the Ajax Control Toolkit (Version number 40412 and higher).

    The following error appears when controls from the ACT are present on the page:
    Microsoft JScript runtime error: AjaxControlToolkit requires ASP.NET Ajax 4.0 scripts. Ensure the correct version of the scripts are referenced. If you are using an ASP.NET ScriptManager, switch to the ToolkitScriptManager in AjaxControlToolkit.dll.

    Solution for .NET 4.0 projects:  Upgrade the RadControls for ASP.NET AJAX version 2010.1.625 or newer.

    Important: Make sure you use the .NET 4.0 build of both Telerik.Web.UI.dll and AjaxControlToolkit.dll

    If upgrade is not option you can use the following workaround:
    <telerik:RadScriptManager runat="server" EnableScriptCombine="false" /> 

    Solution for .NET 3.5 projects: Override the references to MicrosoftAjax.js and MicrosoftAjaxWebForms.js to point to the ACT script files.

    <telerik:RadScriptManager runat="server"
            <asp:ScriptReference Assembly="System.Web.Extensions, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
                Name="MicrosoftAjax.js" Path="Scripts-40412/MicrosoftAjax.js" /> 
            <asp:ScriptReference Assembly="System.Web.Extensions, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35" 
                Name="MicrosoftAjaxWebForms.js" Path="Scripts-40412/MicrosoftAjaxWebForms.js" /> 

    The script files are obtained by building the ACT from source. Sample project, including the scripts for version 40412, is attached.

  2. Eyup
    Eyup avatar
    3384 posts

    Posted 22 Jul 2014 Link to this post

    You can find updated information about the current compatibility state here: 

    Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items
Back to Top