I am using DNN(DotNetNutke) 07.01.00 (2676) for website. DNN internally uses Telerik Controls.
I am using asp.net Update Panel in my page, so there is a Button inside that UpdatePanel (named as "UPDATE CART" in screen shot of page) and when i click on this button request goes to server and executes the code on server and then response comes with rendered HTML and update the content of UpdatePanel.
So problem here is like that when i click this button("UPDATE CART") first time(i.e.when i come to this page first time or say it is not post back or IsPostback ==false) then my content of Update Panel just get updated but after that if i click the button again(IsPostBack==true) then content of Update Panel does not change although the request always goes to server every time and also response is sent from server without any error but content of Update Panel doesn't change.
Here is the screen shot of exception
Here is the screen shot of exception detail when page loaded first time.
Here is the screen shot of exception detail when Page's IsPostBack== true or i clicked that "UPDATE CART".button again and again(not the first time).
But interesting thing what i noticed is that when i logged-in as a DNN Super User in website and come to this page then no exception comes and functionality works well or content of Update Panel always change on "UPDATE CART" button clicks but whenever i logged-in as other user i.e. rather then DNN Super User i i always face this problem.
So please help me asap and sorry for my bad English.