Asp.net Ajax Client-Side framework failed to load

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I have windows 7, which has visual studio 2005, 2008 and 2010.
and Telerik Asp.net Ajax controls.

I am trying to run an visual studio 2010 asp.net application and I am getting this(shown in the image) error now days.

I am not able to find any working solution till now.

could you please help me out here.

Here is my config file code.

=============================================================================
<?xml version="1.0"?>
<!--
    Note: As an alternative to hand editing this file you can use the
    web admin tool to configure settings for your application. Use
    the Website->Asp.Net Configuration option in Visual Studio.
    A full list of settings and comments can be found in
    machine.config.comments usually located in
    \Windows\Microsoft.Net\Framework\v2.x\Config
-->
<configuration>
  <appSettings>
    <add key="ViewStateTimeout" value="61" />
    <add key="LicensesLocation" value="D:\Inetpub\www\CEMG\Licenses\" />
    <add key="UploadsLocation" value="D:\Inetpub\www\CEMG\Uploads\" />
    <add key="WebDirectory" value="D:\Inetpub\www\CEMG\" />
    <add key="BaseURL" value="https://cemgpms.cemginc.com/" />
    <add key="ExchangeAddress" value="https://gdmail.gd-ltd.com/exchange/"/>
    <add key="DomainName" value="gd-ltd"/>
    <!--This Belongs to Aaron-->
    <add key="Aaron_LicensesLocation" value="C:\Inetpub\wwwroot\CEMG\Licenses\" />
    <add key="Aaron_UploadsLocation" value="C:\Inetpub\wwwroot\CEMG\Uploads\" />
    <add key="Aaron_WebDirectory" value="C:\Inetpub\wwwroot\CEMG\" />
    <add key="Aaron_BaseURL" value="http://aaronspilman/" />
    <add key="Aaron_ExchangeAddress" value="https://gdmail.gd-ltd.com/exchange/"/>
    <add key="Aaron_DomainName" value="gd-ltd"/>
    <add key="AARONSPILMAN" value="Aaron" />
    <!--This Belongs to Deepka81-->
   <add key="Deepak_LicensesLocation" value="D:\work\CEMG Data\CEMG\Licenses\" />
    <add key="Deepak_UploadsLocation" value="D:\work\CEMG Data\CEMG\Uploads\" />
    <add key="Deepak_WebDirectory" value="D:\work\CEMG Data\CEMG\" />
    <add key="Deepak_BaseURL" value="http://DeepakYadav81/" />
    <add key="Deepak_ExchangeAddress" value="http://exch.stylus.net/exchange/"/>
    <add key="Deepak_DomainName" value="stylus"/>
    <add key="DeepakYadav81" value="Deepak" />

   
    <add key="ProductionConnectionString" value="CEMGConnectionString" />
    <add key="ChartImageHandler" value="storage=file;timeout=20;dir=D:\Inetpub\www\CEMG\images\;" />
  </appSettings>

  <system.web>
    <sessionState timeout="60" />
    <!-- Fix the Timeout issue when uploading a large file -->
    <httpRuntime maxRequestLength="512000" executionTimeout="54000" />
    <!--
            Set compilation debug="true" to insert debugging
            symbols into the compiled page. Because this
            affects performance, set this value to true only
            during development.

            Visual Basic options:
            Set strict="true" to disallow all data type conversions
            where data loss can occur.
            Set explicit="true" to force declaration of all variables.
        -->
    <!--
            Set compilation debug="true" to insert debugging
            symbols into the compiled page. Because this
            affects performance, set this value to true only
            during development.
        -->
    <compilation debug="true" strict="false" explicit="true" targetFramework="4.0">
      <assemblies>
        <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
        <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Drawing.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Speech, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
        <add assembly="Microsoft.Build.Framework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
        <add assembly="System.Management, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
      </assemblies>
      <buildProviders>
        <add extension=".rdlc" type="Microsoft.Reporting.RdlBuildProvider, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
      </buildProviders>
    </compilation>
    <pages controlRenderingCompatibilityVersion="3.5" clientIDMode="AutoID">
      <namespaces>
        <clear />
        <add namespace="System" />
        <add namespace="System.Collections" />
        <add namespace="System.Collections.Generic" />
        <add namespace="System.Collections.Specialized" />
        <add namespace="System.Configuration" />
        <add namespace="System.Data" />
        <add namespace="System.Data.SqlClient" />
        <add namespace="System.Text" />
        <add namespace="System.Text.RegularExpressions" />
        <add namespace="System.Web" />
        <add namespace="System.Web.Caching" />
        <add namespace="System.Web.SessionState" />
        <add namespace="System.Web.Security" />
        <add namespace="System.Web.Profile" />
        <add namespace="System.Web.UI" />
        <add namespace="System.Web.UI.WebControls" />
        <add namespace="System.Web.UI.WebControls.WebParts" />
        <add namespace="System.Web.UI.HtmlControls" />
        <add namespace="System.Linq" />
        <add namespace="System.Xml.Linq" />
      </namespaces>
      <controls>
        <add tagPrefix="telerik" namespace="Telerik.Web.UI" assembly="Telerik.Web.UI" />
        <add tagPrefix="asp" namespace="System.Web.UI.DataVisualization.Charting" assembly="System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
      </controls>
    </pages>
    <!--
            The <authentication> section enables configuration
            of the security authentication mode used by
            ASP.NET to identify an incoming user.
        -->
    <!--
            The <authentication> section enables configuration
            of the security authentication mode used by
            ASP.NET to identify an incoming user.
        -->
    <authentication mode="Windows" />
    <!--
            The <customErrors> section enables configuration
            of what to do if/when an unhandled error occurs
            during the execution of a request. Specifically,
            it enables developers to configure html error pages
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
    <customErrors mode="Off" />
    <!--
            The <customErrors> section enables configuration
            of what to do if/when an unhandled error occurs
            during the execution of a request. Specifically,
            it enables developers to configure html error pages
            to be displayed in place of a error stack trace.

        <customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm">
            <error statusCode="403" redirect="NoAccess.htm" />
            <error statusCode="404" redirect="FileNotFound.htm" />
        </customErrors>
        -->
    <httpHandlers>
      <add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource"
        validate="false" />
      <add path="ChartImage.axd" verb="*" type="Telerik.Web.UI.ChartHttpHandler"
        validate="false" />
      <add path="Telerik.Web.UI.SpellCheckHandler.axd" verb="*" type="Telerik.Web.UI.SpellCheckHandler"
        validate="false" />
      <add path="Telerik.Web.UI.DialogHandler.aspx" verb="*" type="Telerik.Web.UI.DialogHandler"
        validate="false" />
      <add path="Telerik.RadUploadProgressHandler.ashx" verb="*" type="Telerik.Web.UI.RadUploadProgressHandler"
        validate="false" />
      <add path="ChartImg.axd" verb="GET,HEAD,POST" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"
        validate="false" />
      <add path="Reserved.ReportViewerWebControl.axd" verb="*" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"
        validate="false" />
      <add path="ImageThumbnail.ashx" verb="*" type="Thumbnails" validate="false"/>
     
    </httpHandlers>
    <httpModules />
  </system.web>
  <!--
        The system.webServer section is required for running ASP.NET AJAX under Internet
        Information Services 7.0.  It is not necessary for previous version of IIS.
    -->
  <system.webServer>
    <validation validateIntegratedModeConfiguration="false" />
    <handlers>
      <remove name="ChartImage_axd" />
      <remove name="Telerik_Web_UI_SpellCheckHandler_axd" />
      <remove name="Telerik_Web_UI_DialogHandler_aspx" />
      <remove name="Telerik_RadUploadProgressHandler_ashx" />
      <remove name="Telerik_Web_UI_WebResource_axd" />
      <remove name="ChartImageHandler" />
      <add name="Telerik_Web_UI_WebResource_axd" path="Telerik.Web.UI.WebResource.axd" type="Telerik.Web.UI.WebResource" verb="*" preCondition="integratedMode" />
      <add name="ChartImage_axd" path="ChartImage.axd" type="Telerik.Web.UI.ChartHttpHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_Web_UI_SpellCheckHandler_axd" path="Telerik.Web.UI.SpellCheckHandler.axd" type="Telerik.Web.UI.SpellCheckHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_Web_UI_DialogHandler_aspx" path="Telerik.Web.UI.DialogHandler.aspx" type="Telerik.Web.UI.DialogHandler" verb="*" preCondition="integratedMode" />
      <add name="Telerik_RadUploadProgressHandler_ashx" path="Telerik.RadUploadProgressHandler.ashx" type="Telerik.Web.UI.RadUploadProgressHandler" verb="*" preCondition="integratedMode" />
      <add name="ChartImageHandler" preCondition="integratedMode" verb="GET,HEAD,POST" path="ChartImg.axd" type="System.Web.UI.DataVisualization.Charting.ChartHttpHandler, System.Web.DataVisualization, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" />
      <add name="ReportViewerWebControlHandler" preCondition="integratedMode" verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
    </handlers>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="524288000" />
      </requestFiltering>
    </security>
    <modules runAllManagedModulesForAllRequests="true" />
  </system.webServer>
</configuration>
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