title: IIS web page not loading
body: <p>I'm having a problem trying to load a web page in my mongoose installation. I get the following message when navigating to the URL. I'm hoping someone can point me in the right direction here.</p>
  
  <pre><code>Server Error in '/WSWebClient' Application.
  </code></pre>
  
  <hr>
  
  <p><strong>Configuration Error 
  Description:</strong> </p>
  
  <p>An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately. </p>
  
  <pre><code>Parser Error Message: Could not load file or assembly 'System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
  </code></pre>
  
  <p><strong>Source Error:</strong> </p>
  
  <pre><code>Line 13:         &lt;add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /&gt;
  Line 14:         &lt;add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /&gt;
  Line 15:    &lt;add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /&gt;
  Line 16:         &lt;!-- Nevron (Diagram) Assemblies --&gt;
  Line 17:         &lt;add assembly="Nevron.Diagram.WebForm, Version=9.3.24.12, Culture=neutral, PublicKeyToken=95BCC3D41B0512E9"/&gt; 
  
  Source File: C:\inetpub\wwwroot\WSWebClient\web.config    Line: 15 
  
  Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.
  
  
  === Pre-bind state information ===
  LOG: User = IIS APPPOOL\ASP.NET v4.0
  LOG: DisplayName = System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
   (Fully-specified)
  LOG: Appbase = file:///C:/inetpub/wwwroot/WSWebClient/
  LOG: Initial PrivatePath = C:\inetpub\wwwroot\WSWebClient\bin
  Calling assembly : (Unknown).
  ===
  LOG: This bind starts in default load context.
  LOG: Using application configuration file: C:\inetpub\wwwroot\WSWebClient\web.config
  LOG: Using host configuration file: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\aspnet.config
  LOG: Using machine configuration file from C:\Windows\Microsoft.NET\Framework64\v4.0.30319\config\machine.config.
  LOG: Post-policy reference: System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
  LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/wswebclient/c0740cfa/5af5eef5/System.Web.Mvc.DLL.
  LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/wswebclient/c0740cfa/5af5eef5/System.Web.Mvc/System.Web.Mvc.DLL.
  LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/WSWebClient/bin/System.Web.Mvc.DLL.
  LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/WSWebClient/bin/System.Web.Mvc/System.Web.Mvc.DLL.
  LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/wswebclient/c0740cfa/5af5eef5/System.Web.Mvc.EXE.
  LOG: Attempting download of new URL file:///C:/Windows/Microsoft.NET/Framework64/v4.0.30319/Temporary ASP.NET Files/wswebclient/c0740cfa/5af5eef5/System.Web.Mvc/System.Web.Mvc.EXE.
  LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/WSWebClient/bin/System.Web.Mvc.EXE.
  LOG: Attempting download of new URL file:///C:/inetpub/wwwroot/WSWebClient/bin/System.Web.Mvc/System.Web.Mvc.EXE.
  
  
  
  --------------------------------------------------------------------------------
  Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.17929 `
  </code></pre>