wpf restart application issue

HI,

I have drop-down control in WPF application. When I change my drop-down value, it's asking me to restart your application. 

below is code which will be executed if I hit OK to restart.

if (result == MessageBoxResult.OK)
                    {

System.Diagnostics.Process.Start(Application.ResourceAssembly.Location);                             Application.Current.Shutdown();                       
                    }

This code makes my application shut down but when re start application, it give me below error.

pls help

thanks