title: Visual studio won't debug into referenced DLL (from same solution)
body: <p>I have a Visual studio 2008 solution, with 2 projects. A DLL, A, and a Web application, B. </p>
  
  <p>B has a project reference to A, and A.dll and A.pdb are being copied to B's bin/ directory.</p>
  
  <p>Everything is set to compile in debug mode.</p>
  
  <p>I can run the cassini webserver and debug web application B fine, but when I come to call a method in A.dll, pressing F11 to step into it does not step into it, it steps over it. I want to step into it.</p>
  
  <p>Any ideas why I might not be able to step into the source code of A?</p>
  
  <h2>Edit: Additional Info</h2>
  
  <p>I do not have 'just my code' checked.</p>
  
  <p>I can set a breakpoint in the DLL, and it shows as a red circle (not a hollow one), but it is never hit.</p>
  
  <p>Hmmm... I just altered the code in the DLL which is being called to start with</p>
  
  <pre><code>throw new Exception("Hello");
  </code></pre>
  
  <p>And I'm not getting an exception. That's pretty suspicious...</p>