title: DragDrop registration did not succeed in Setup Project
body: <p>We have some installation project in Visual Studio solution (Other project types -> Setup and deployment -> Setup project). This project has another library type project with Installation class named InstallationCore like project output. In user action, I call to Install and Uninstall functions of installer of InstallationCore. </p>
  
  <p>InstallationCore has windows forms for interaction with user. There, in forms, I use Drag and Drop functionality for Drag and Drop text from Tree View to Text Box.<br>
  But in line:</p>
  
  <pre><code>txbUserName.AllowDrop = true;
  </code></pre>
  
  <p>I get error of JIT debugger: </p>
  
  <blockquote>
    <p>Unhandled exception has occured<br>
    DragDrop registration did not succeed<br>
    System.InvalidOperationException: DragDrop registration did not succeed</p>
  </blockquote>
  
  <p>And long stack trace after that.<br>
  Important to say, that when I run Installer function from test project the error did not occur and all work fine. Error occurs only when I run the .msi package.  </p>
  
  <p>Any suggestions?  </p>