Page doesn't postback if it has validation control after deployment

I have a page with a RadioButtonList which should post back when the selection is changed. But because of RequiredFieldValidator on the page, the postback is not happening. It is working fine on //localhost/ but not after deployment to production server.

The error on the page is: 'event' is null or not an object

Line: 126 Char: 5 Code: 0

URI: http://web-dev:90/aspnet_client/system_web/2_0_50727/WebUIValidation.js

A few things which I have already tried:

1) aspnet_client folder is in its proper 开发者_Python百科place.

2) I have added Page.Validate() and if(Page.IsValid){} statements with the button on whose click the validation should happen.

3) The ValidatorCommonOnSubmit function in WebUIValidation.js file looks like this:

   function ValidatorCommonOnSubmit() {
    event.returnValue = !Page_BlockSubmit;
   Page_BlockSubmit = false;
   return event.returnValue;}

you can group the required field validator related controls so that it wont effect the radio button list.

<asp:RequiredFieldValidator ID="rfv" runat="server" ValidationGroup="button1"
        ErrorMessage="*"></asp:RequiredFieldValidator>
  <asp:Button ID="Button1" runat="server" Text="Button1" ValidationGroup="button1"  />

As far as your radio button list is not grouped under "button1" group, it will not have any problem.

Details here and here