Everything was working fine and then I started to get this error.

Juicebox Error: Config XML file not found.

I think all the configuration files are in the correct location.  I saw the following error message in Windows event viewer.  Any clue as to what is going on.

thanks,
Ted

Server Error in '/ASP' Application.
________________________________________

Configuration Error
Description: 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.

Parser Error Message: Could not load file or assembly 'System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

Source Error:

Line 3945:        <add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
Line 3946:        <add assembly="System.Data.Linq, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
Line 3947:        <add assembly="System.Web.Helpers, Version=3.0.0.0, Culture=neutral,PublicKeyToken=31BF3856AD364E35" />
Line 3948:        <add assembly="System.Web.Mvc, Version=5.1.0.0, Culture=neutral,PublicKeyToken=31BF3856AD364E35" />
Line 3949:        <add assembly="System.Web.WebPages, Version=3.0.0.0, Culture=neutral,PublicKeyToken=31BF3856AD364E35" />

Source File: E:\Inetpub\wwwroot\HDMA\Website\web.config    Line: 3947

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Web.Helpers, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' could not be loaded.

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].