title: C#: cannot find assembly file
body: <p>I am getting an error back from a DLL saying it cannot create an instance of one of classes in my solution because it cannot find the assembly file.</p>
  
  <p>If I am debugging a solution, do I need to put a copy of certain assembly files in other locations?</p>
  
  <p>EDIT:</p>
  
  <p>In my compiled solution all the DLLs (including the proprietary ones) all go in the app directory and it works fine.  But I am trying to work out where the files should do in order to debug the solution.</p>