issues with installation package

I have developed a C# project whose only dependency is .NET Framework 4.0 Client
The executable reads text file and creates xml file that it stores in a folder. the dependencies are:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.IO;
using System.Xml;
using System.Xml.Linq;
using System.Xml.XPath;
using System.Threading;
using System.Text.RegularExpressions;
using System.Collections.Specialized;
using System.Globalization;
using System.IO.Compression;

The installation package worked and the framework has been installed.
However, when running, the executable throws the following error:
Could not load file or assembly 'System.Web.Extensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.
I do not use web component, so what has to be configured on the server 2008R2 for the executable not to fail?
josephdtsAsked:
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Ammar GaffarSoftware EngineerCommented:
If your project is ASP.NET then check which .NET Framework configured for IIS Application Pool you are using, If it is v.2.0 then change it to v.4 and try again.


Good Luck
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