my asp.net mvc 2.0 application fails with error "No parameterless constructor defined for this object"

Answer 1

Where is the parameter-less constructor for your controller? ManagePermissionsController

The default controller factory requires one, so unless you create your own Controller factory you'll need to add one and change the way you initialize your DataManager.

Answer 2

I fix it, like this:

protected void Application_Start()
{
            AreaRegistration.RegisterAllAreas();

            RegisterRoutes(RouteTable.Routes);
            //by this code:
            ControllerBuilder.Current.SetControllerFactory(new ControllerFactory());
}