Asp.net Server Error in Application - assembly 'System.Data.Services Configuration

My ASP.Net 3.5 VB web application works fine on my dev environment, however, when moved to the Production server I get "Server Errors in Appication / Configuration Errors. I tried crearting a bin folder on the root of the server and copy "System.Data.Entity.dll" and  "System.Web.Entity.dll" but still getting this error please HELP ...

Server Error in XXXX 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.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. The system cannot find the file specified.

Source Error:

 

Line 51:         <add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 52:         <add assembly="System.Data.Entity, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 53:         <add assembly="System.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 54:         <add assembly="System.Data.Services.Client, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
Line 55:         <add assembly="System.Security, Version=2.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>       

Source File: D:\Inetpub\wwwroot\emspep\web.config Line: 53

Assembly Load Trace: The following information can be helpful to determine why the assembly 'System.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' 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].       

Version Information: Microsoft .NET Framework Version:2.0.50727.3053; ASP.NET Version:2.0.50727.3053


demergAsked:
Who is Participating?
 
Carl TawnConnect With a Mentor Systems and Integration DeveloperCommented:
It sounds like you may not have .Net 3.5 installed on your server.
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demergAuthor Commented:
Tnks
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demergAuthor Commented:
Thanks Carl

We moved the site to a 3.5 Version and is now working fine!
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