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

[Anil]

Hi,
I am developing application in Dot Net 4.0. I am using Telerik RadControls for ASP.NET Ajax version 2010.3.1317.40 and AjaxControlToolkit version 4.1.40412.2
I  have used RadAjaxManager in my page. But it gives script error. Earlier with AjaxControlToolkit version 1.0.10301.0 it was working fine.

I tried the fix provided by telerik admin
<telerik:RadScriptManager runat="server" EnableScriptCombine="false" />  but still error is comming.

Guide me to resolve this issue asap.

[Sebastian]

Hi Anil,

Please review the communication in this forum post which should help you address any MS Ajax Toolkit compatibility issues you might currently have.

Best regards,
Sebastian
the Telerik team

[Anil]

not working with this fix. It gives error like

if (typeof(Sys) === 'undefined') throw new Error('ASP.NET Ajax client-side framework failed to load.');