title: No Source available
body: <p>I am not sure what happened or if I did anything..
  Now anytime I try and debug it says no source available on all BCL stuff
  For example,  on a debug.print I get that message with</p>
  
  <blockquote>
    <p>Locating source for
    'f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs'.
    Checksum: MD5 {40 74 18 44 a8 15 28 2e
    54 75 5e 40 d1 5f 6a 0}</p>
    
    <p>The file
    'f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs'
    does not exist.</p>
    
    <p>Looking in script documents for
    'f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs'...</p>
    
    <p>Looking in the projects for
    'f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs'.
    The file was not found in a project.</p>
    
    <p>Looking in directory 'C:\Program
    Files\Microsoft Visual Studio
    10.0\VC\crt\src\'...</p>
    
    <p>Looking in directory 'C:\Program
    Files\Microsoft Visual Studio
    10.0\VC\atlmfc\src\mfc\'...</p>
    
    <p>Looking in directory 'C:\Program
    Files\Microsoft Visual Studio
    10.0\VC\atlmfc\src\atl\'...</p>
    
    <p>Looking in directory 'C:\Program
    Files\Microsoft Visual Studio
    10.0\VC\atlmfc\include\'...</p>
    
    <p>The debug source files settings for
    the active solution indicate that the
    debugger will not ask the user to find
    the file:
    f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs.</p>
    
    <p>The debugger could not locate the
    source file
    'f:\dd\ndp\fx\src\CompMod\System\Diagnostics\Debug.cs'.</p>
  </blockquote>
  
  <p>This happens all the time now and I:</p>
  
  <ol>
  <li>Don't have an F:</li>
  <li>Enable .net framework source stepping is unchecked</li>
  </ol>
  
  <p>Is there some other sneaky setting to make these messages go away?</p>