title: Clickonce error: missing files. Need to get missing filename
body: <p>My ClickOnce app gives an error for a user: "Cannot download the application. The application is missing required files. Contact the application vendor or your system administrator for assistance."</p>
  
  <p>How can I pinpoit which file is missing? Do I manually need to put files on the publishing server?</p>
  
  <p>I thought when I click on the prerequisities and set the option to download the prerequisites from the component vendor's web site and set to include components, ClickOnce would include all of them. Looks like I am missing something. How do I know what it is. Manually going through the manifest is going to be time consuming.</p>