An unhandled exception occurred in the silver light application

Problem Description:

 An unhandled exception occurred in the silver light application

The site did not allow me creating any new item on one of my sub sites and an error message as “An unhandled exception occurred in Silverlight Application” as in screenshot below.

Steps to solve problem:

1.       Go to Central Administration

2.       Go to Application Management > Manage Web Application

3.       Select the SharePoint Site Collection where you are facing the issue and Click General Settings on the ribbon

4.       Set Web Page Security Validation to “On” and save the changes.

5.       That’s all...Check with your site.

Product applies to:

SharePoint Server 2010

      SharePoint Foundation 2010