title: The assembly with display name 'VJSharpCodeProvider' failed to load
body: <p>I added an AjaxToolkit:AutoCompleteExtender to my ASP.Net 3.5 application. The web service lives in the same web application. Now I am getting this error when I hit F5/Debug in VS2008, and backing out the changes step-by-step so far have not revealed the cause yet. </p>
  
  <p>I can't seem to get rid of the error. While the application starts up and I don't notice any issues once it is running.</p>
  
  <pre><code>BindingFailure was detected
  Message: The assembly with display name 'VJSharpCodeProvider' failed to load in 
   the 'LoadFrom' binding context of the AppDomain with ID 4. The cause of the
   failure was:
   System.IO.FileNotFoundException: Could not load file or assembly 
  'VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral, 
   PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system 
   cannot find the file specified.
   File name: 'VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral,
   PublicKeyToken=b03f5f7f11d50a3a'
  
  === Pre-bind state information ===
  LOG: DisplayName = VJSharpCodeProvider, Version=2.0.0.0, Culture=neutral,
   PublicKeyToken=b03f5f7f11d50a3a
   (Fully-specified)
  Calling assembly : (Unknown).
  ===
  LOG: This bind starts in default load context.
  LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework\
    v2.0.50727\config\machine.config.
  LOG: Post-policy reference: VJSharpCodeProvider, Version=2.0.0.0, 
    Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a/VJSharpCodeProvider.DLL.
  etc
  </code></pre>