Sys.InvalidOperationException: Could not find UpdatePanel with ID If it is being updated dynamically then it must be inside another UpdatePanel

[Ade]

Hello guys, i have been having a problem with this and been on the forums all day to no avail. i have a multivew with a tree that is a usercontrol and a RadAjaxManager for link buttons. When i set enable ajax to false, it works so i know its an ajax issue. I am not using any update panels. i keep getting this error when i click my link button:

Microsoft JScript runtime error: Sys.InvalidOperationException: Could not find UpdatePanel with ID 'ctl00_ContentPlaceHolderMain_ctl00_ContentPlaceHolderMain_ParentTreePanelPanel'. If it is being updated dynamically then it must be inside another UpdatePanel.

Snippet:

<%@ Page Language="C#" MasterPageFile="~/DEP-tree.master" AutoEventWireup="True"<br>
   Inherits="DEPSite.Management.EntityDefinitions" Title="DEP Element Definitions"<br> 
  CodeBehind="EntityDefinitions.aspx.cs" %><br>
<br><%@ Register Src="~/UserControls/EntityTreeUC.ascx" TagName="EntityTree" TagPrefix="uc2" %>
<br><%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<br><br><asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolderSide1" runat="Server"><br>
    <uc2:EntityTree ID="EntitySelectionTree" runat="server" ShowEntityStatus="true" SelectFirstNode="true" />
<br></asp:Content><br><br> <telerik:RadAjaxManager runat="server" ID="AjaxManager" EnableAJAX="true">
<br>        <AjaxSettings><br><telerik:AjaxSetting AjaxControlID="ParentLinkButton">
<br>                <UpdatedControls>
<br>                    <telerik:AjaxUpdatedControl ControlID="ParentTree"/>
<br>                </UpdatedControls><br>            </telerik:AjaxSetting>
<br></AjaxSettings><br>
<br><asp:View ID="ParentView" runat="server">
<br>                <uc2:EntityTree ID="ParentTree" runat="server" ShowEntityStatus="true" SelectFirstNode="true" />
<br>        </asp:View><br>

^format code block added a bunch of 'br's

i have also tried putting the tree in a panel as suggested on some forum post already
Thanks 

[Ade]

resolved

[Dave]

How was it resolved.  Please post your solution.

[Kurt]

Great when people say it's solved, but don't say what they did....

I'm having a similar issue with an UpdatePanel on a server that uses load balancing.

[Maria Ilieva]

Hi Kurt,

In most cases the presented error appear due to nested Ajax setting on the page which causes nested UpdatePanels to render. Please share your scenario so that we could further suggest you possible solution.

Kind regards,
Maria Ilieva
the Telerik team