title: What does it mean that a DLL is flagged as "incorrectly specified as a file" in my C# project?
body: <p>I get this warning in a C# project:</p>
  
  <pre><code>Assembly 'bin\DAL05.dll' is incorrectly specified as a file.
  </code></pre>
  
  <p>The project does reference DAL05, which has these values:</p>
  
  <pre><code>Description = "Data Access Layer for VS2005"
  Version = v2.0.50727
  </code></pre>
  
  <p>Also, the project's bin folder contains DAL05.dll with these values:</p>
  
  <pre><code>BuildAction = "Content"
  Copy to Output Directory = "Do not copy"
  Full Path = "C:\Projects\PRP\PlatypusReportingPackage\bin\DAL05.dll"
  </code></pre>
  
  <p>What does it mean that this DLL is considered "incorrectly specified as a file"? Since it's "just" a warning, can I blissfully ignore it, or is this a potential shoal reef?</p>