title: wcf service hosting on windows service installation error
body: <p>when i install wcf service hosting on windows service using InstallUtil i get the following Error Message.</p>
  
  <p>An exception occurred during the Rollback phase of the System.ServiceProcess.Ser
  viceProcessInstaller installer.
  System.NullReferenceException: Object reference not set to an instance of an obj
  ect.
  An exception occurred during the Rollback phase of the installation. This except
  ion will be ignored and the rollback will continue. However, the machine might n
  ot fully revert to its initial state after the rollback is complete.</p>
  
  <p>The Rollback phase completed successfully.</p>
  
  <p>The transacted install has completed.
  The installation failed, and the rollback has been performed.</p>
  
  <p>Can You please tell me how to overcome this problem?</p>