RadAjaxManager issues with sharepoint 2010

Question

I have two asp panels with ID's Panelcombo and PanelGrid .Panelcombo contains 6 comboxes and Panel Grid contains 1 radgrid. After filling all comboboxes I am showing Radgrid.I have RadAjaxManger with the following setting
<telerik:RadAjaxManager
ID="ajman"
runat="server">
    <AjaxSettings>
        <telerik:AjaxSetting
AjaxControlID="Panelcombo">
            <UpdatedControls>
                <telerik:AjaxUpdatedControl
ControlID="Panelcombo"/>
                  <telerik:AjaxUpdatedControl
ControlID="PanelGrid"/>
            </UpdatedControls>
        </telerik:AjaxSetting>
 </AjaxSettings>
</telerik:RadAjaxManager>
                   Radgrid contains RadNumerictextbox which has Client event as follows
<ClientEvents
OnValueChanged="ValueChanged"
/>
                 which is not firing.
When I remove the RadAjaxManager event fires perfectly.After debugging using firebug it gives error on console
"Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace
is enabled"
I have tested my code(with RadAjaxManager) in visual studio it works perfectly.But it gives error in sharepoint 2010 environment .
For your reference http://www.telerik.com/forums/radajaxmanager-issues-with-client-side-event-of-radgrid

Answer 1

Hi,
I would suggest you do as follows:
1. Test your code in a ASP.NET Web Application project to see if the same error still exists;
2. Please apply other OOTB master pages to your site for a test;
3. As the limited resource we may have, it would be better to get a sample solution which can work in SharePoint 2010 environment from its official website, then deploy it to
your environment to see if it is an issue of your master page.
Feel free to reply with the test result or if there any progress.
Best regards,
Patrick
Patrick Liang
TechNet Community Support