Error: Only one instance of a ScriptManager can be added to the page

[Jessie]

Hi,

(1) I had master page using 

 

<

 

telerik:RadScriptManager ID="RadScriptManager1" runat="server">

 

 

 

</telerik:RadScriptManager>

 

 

 

(2) I also using script manager in Content Page

 

<

 

asp:ScriptManagerProxy ID="ScriptManagerProxy1" runat="server">

 

 

</asp:ScriptManagerProxy>

 

But I still getting following error message
Error: Only one instance of a ScriptManager can be added to the page.

 
Anyone can tell how to solve this problem? Thanks.

[illumination]

This might help.
http://www.telerik.com/community/forums/aspnet-ajax/scriptmanager-and-stylesheetmanager/how-to-handle-asp-net-scriptmanager-which-is-in-masterpage-radscriptmnager-which-is-in-content-page.aspx
Thanks!