Adding new installer class in windows application getting compiler error

I have created a widows application with setup project. I compiled and build.Everything looks fine.
 
For changing the configuration file during installation am trying to add a new Installer file. when i add it by default i get the below code
 

[RunInstaller(true)]
    public partial class Installer : Installer
    {
        public Installer()
        {
            InitializeComponent();
        }
    }

 
before modifying When i compile this Am gettin
Circular base class dependency involving 'windows_setup.Installer' and 'windows_setup.Installer'
 
windows setup is the name space i used for the application
 
Why am getting this and how to resolve this...?
 
Thanks