Microsoft JScript runtime error: Sys.InvalidOperationException: ScriptLoader.loadScripts cannot be called while the ScriptLoader is already loading scripts.

[Kannadasan]

Dear Team ,
I have two issues:

1.I got this type of errro.when i click continue  any edit button in grid or add new button in grid
Microsoft JScript runtime error: Sys.InvalidOperationException: ScriptLoader.loadScripts cannot be called while the ScriptLoader is already loading scripts.
how can  i avoid this problems ..this major problems in my project..our client ask questions.

2. when i click addnew or edit button in grid takes time to open in entry field ..how can  i avoid this problems..it is verry slow ..give good solution for past access for grid fields.

need quick past,

With Regards,
S.Kannadasan

[Maria Ilieva]

Hello Kannadasan,

Could you please let me know if you are using Ajax calls in your application?

1. If Ajax is used one possible solution for this is setting RequestQueueSize property of RadAjaxPanel/RadAjaxManager. Its default value is 0. You can find more information about this property on the following links:

 RequestQueueSize Property
Ajax requests queueing

Other option is to cancel ajax request if your script is already executing one as shown here:

<script type="text/javascript">
    Sys.WebForms.PageRequestManager.getInstance().add_initializeRequest(initRequest);
    function initRequest(sender, args)
    {
        if(Sys.WebForms.PageRequestManager.getInstance().get_isInAsyncPostBack())
            args.set_cancel(true);
    }
</script>

2. Regarding the performance issue you are facing please revise the links below:
http://www.telerik.com/help/aspnet-ajax/gridoverview.html (Chapter 'Performance tips and tricks'
http://www.telerik.com/products/aspnet-ajax/resources/top-performance.aspx
http://www.telerik.com/support/aspnet-ajax.aspx (Section "Performance")

Regards,
Maria Ilieva
the Telerik team