Sys.WebForms.PageRequestManagerServerErrorException: Invalid JSON primitive

[Puay Chai Tan]

Hi,

i have this "JSON primitive" error in runtime upon clicking a button in the usercontrol inside the radgrid. i dont know what control causes this, since i only have a radgrid in parent control, an update panel and rad tabstrip and two radeditor inside a user control.

any ideas why this is happening?

Thanks.

[Pavlina]

Hi Puay,

Do you have RadAjaxManager or RadAjaxPanel in your application? If yes, could you please try disabling ajax, by setting the EnableAjax property of the RadAjaxManager/RadAjaxPanel control you have on the page and confirm that the error  persists?

Greetings,
Pavlina
the Telerik team

[Puay Chai Tan]

Hi, 

I have manage to get rid of that error by removing the other radeditor control, i dont know whats the reason behind that. i just replace the other one to radtextbox instead.
by the way, i have no RadAjaxManager or RadAjaxPanel inside my page including in the masterpage.

can i have i another question?

i get this run time error "microsoft jscript runtime error: 'tagName' is null or not an object" very often when i randomly click in any part of usercontrol inside the grid.

your reply is very much appreciated.
thanks.

[Pavlina]

Hello Puay,

I'm not sure, what can cause the error you received. Please open a new support thread and send us a simple working project, where we can observe this behavior. Once we receive it, we will do our best to help you.

All the best,
Pavlina
the Telerik team