Thank you for reporting the issue.
Actually the problem is due to the default settings of the IIS in Windows 7. Below you can find both the explanation and the solution:
- Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.
- Exception Details: System.Security.SecurityException:Request for the permission of type 'System.Web.AspNetHostingPermission,...
- Cause: Microsoft changed the default setting of the Load User Profile setting of the application pools in Windows 7 and Windows 2008 (the old was True, in IIS7.5 it is False).
- Suggested solution: Open the Advanced Settings of the Application Pool and set the Load User Profile property to True.
We hope this information will help you.
the Telerik team