This error ususally comes when you will try to implement postback thing in URL rewritting by adding App_Browsers and putting the Form.browser inside the App_Browsers folder.
If this error comes while implementing URL rewritting then, Download the class from this URL and put it inside the App_Code folder. You can download the whole files here.
If this error comes while implementing URL rewritting then, Download the class from this URL and put it inside the App_Code folder. You can download the whole files here.
Hello, my name is Bijay. I'm a SharePoint MVP. 