Invalid JSON primitive on button click

[Jaimin]

Hi,

I'm using controls RadScriptManager, RadAjaxManager, RadTreeView and MOSS 2007.

I followed your steps from URL to configure MOSS 2007 to be compatible with Telerik:
http://www.telerik.com/help/aspnet-ajax/moss-incorporate-radcontrols-in-moss-sites.html

The problem is: I want click on a button to serach text in tree view but before going to server I'm checking whether user has entered something or not. If user has not set anything I want to assign an error value which is set on server but when I'm clicking on the button it is giving error "Invalid JSON primitive : .". Also the value I'm accessing in the way
<%= this.hfError127.Value %> is giving error, can you please provde some help..

Also the TreeView is not expanding. What properties do I need to set apart from PostBack=true for a particular node?

Thanks and Regrads,
Jaimin Kansara

[Kirill Ugolnikov]

Hello

I have same problem when use RadTreeView on default.master

[Kirill Ugolnikov]

Problem was resolved after installing version 2008.2.1001