Hello,

We are in the process of upgrading our Kentico installations from v5.5 R2 to version 6.0. The site is running, but we are running into an issue loading a Telerik control and are receiving the following error message:

Assembly "System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" does not contain a script with hash code "ea597d4b".

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NotSupportedException: Assembly "System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" does not contain a script with hash code "ea597d4b".

Source Error:


Line 18: {
Line 19: // Ensure script manager
Line 20: PortalHelper.EnsureScriptManager(Page);
Line 21: }
Line 22: }

Source File: d:\Websites\staging_coronapubliclibrary\CMSPages\ScriptManager.aspx.cs Line: 20

Stack Trace:


[NotSupportedException: Assembly "System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" does not contain a script with hash code "ea597d4b".]
AjaxControlToolkit.ToolkitScriptManager.DeserializeScriptEntries(String serializedScriptEntries, Boolean loaded) +1088
AjaxControlToolkit.ToolkitScriptManager.OutputCombinedScriptFile(HttpContext context) +1005
AjaxControlToolkit.ToolkitScriptManager.OnInit(EventArgs e) +66
System.Web.UI.Control.InitRecursive(Control namingContainer) +133
System.Web.UI.Control.AddedControl(Control control, Int32 index) +277
CMS.UIControls.AbstractCMSPage.EnsureScriptManager() +202
CMSPages_ScriptManager.Page_Init(Object sender, EventArgs e) in d:\Websites\staging_coronapubliclibrary\CMSPages\ScriptManager.aspx.cs:20
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
System.Web.UI.Page.OnInit(EventArgs e) +105
CMS.UIControls.AbstractCMSPage.OnInit(EventArgs e) +16
CMS.UIControls.CMSPage.OnInit(EventArgs e) +87
System.Web.UI.Control.InitRecursive(Control namingContainer) +133
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1970

The resource being requested is:

http://staging.coronapubliclibrary.org/Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=sm1_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3a387126a6-cbc0-46b4-b6ca-c8de25a0044f%3aea597d4b%3ab25378d2

Any thoughts on how to fix this issue? Any help would be appreciated.