title: Visual Studio: "Apply Code Changes" is disabled
body: <p>I am using Visual Studio 2005. When I debug my project, "Apply Code Changes" is disabled in the menu. At one time this worked on my project, but today doesn't. What settings should I check to allow this to work.</p>
  
  <p>Things I have already checked:</p>
  
  <p>I am in debug mode.<br>
  "Debug Information Format" is set to "Program Database for Edit &amp; Continue."</p>