Value cannot be null. Parameter name: exception

[Phil]

Hi:
I was forcing an error (divide by zero).  My timestamp on that error is

[Iana Tsolova]

Hi Phil,

The javascript error is a result of the server error exception. I suggest that you review this help article for more information on error handling with RadAjax.

I hope this helps.

Greetings,
Iana
the Telerik team

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[Phil]

Thanks lana, that is what I was guessing from other situations.
Phil

[Erik]

Hello,

I'm getting the same error. It is caught in the HttpApplication.Error in my case. 
It is generated by a RadGrid that is in a ajaxed usercontrol that is dynamicly loaded. All works well, but when I group on a column and than filter, this error occoures, without the grouping it works fine.
Datasource is OpenAcces / Linq, a .Net 4 app.

Erik

[Phil]

You will have more luck on getting answered, if you post your own thread.

[Iana Tsolova]

Hello Erik,

Does the same issue with the grouping occur in case the grid is added directly on a page? And are recreating the dynamically loaded user control on postback as described here?

Greetings,
Iana Tsolova
the Telerik team

[Erik]

Hi Guys,

Just a short experience here:
I got this error again today. The problem was that there was a situation where dynamically loaded controls had double ID's. Avoid that when ajaxing! (avoid it anyway... :-))

Erik