title: <compilation debug="true"/> I m getting this error in my web site
body: <p>Please tell me whats wrong and what is the solution</p>
  
  <pre><code>﻿&lt;?xml version="1.0"?&gt;
  </code></pre>
  
  <p>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 
  -->
  </p>
  
  <pre><code>&lt;configSections&gt;
    &lt;sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"&gt;
      &lt;sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"&gt;
        &lt;section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/&gt;
        &lt;sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"&gt;
          &lt;section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere" /&gt;
          &lt;section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /&gt;
          &lt;section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /&gt;
          &lt;section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" /&gt;
        &lt;/sectionGroup&gt;
      &lt;/sectionGroup&gt;
    &lt;/sectionGroup&gt;
  &lt;/configSections&gt;  
  
  
  &lt;appSettings/&gt;
  &lt;connectionStrings/&gt;
  &lt;system.web&gt;
      &lt;!-- 
          Set compilation debug="true" to insert debugging 
          symbols into the compiled page. Because this 
          affects performance, set this value to true only 
          during development.
      --&gt;
      &lt;compilation debug="false"&gt;
  
  
  &lt;compilation debug="true"/&gt; 
  &lt;authentication mode="None"/&gt;
  
        &lt;assemblies&gt;
          &lt;add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
          &lt;add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
          &lt;add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/&gt;
        &lt;/assemblies&gt;
  
      &lt;/compilation&gt;
      &lt;!--
          The &lt;authentication&gt; section enables configuration 
          of the security authentication mode used by 
          ASP.NET to identify an incoming user. 
      --&gt;
      &lt;authentication mode="Windows" /&gt;
      &lt;!--
          The &lt;customErrors&gt; 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.
  
      &lt;customErrors mode="off" /&gt;
      --&gt;
  </code></pre>
  
  <p></p>
  
  <pre><code>  &lt;pages&gt;
      &lt;controls&gt;
        &lt;add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
        &lt;add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
      &lt;/controls&gt;
    &lt;/pages&gt;
  
    &lt;httpHandlers&gt;
      &lt;remove verb="*" path="*.asmx"/&gt;
      &lt;add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
      &lt;add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
      &lt;add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/&gt;
    &lt;/httpHandlers&gt;
    &lt;httpModules&gt;
      &lt;add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
    &lt;/httpModules&gt;
  
  
  &lt;/system.web&gt;
  
  &lt;system.codedom&gt;
    &lt;compilers&gt;
      &lt;compiler language="c#;cs;csharp" extension=".cs" warningLevel="4"
                type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt;
        &lt;providerOption name="CompilerVersion" value="v3.5"/&gt;
        &lt;providerOption name="WarnAsError" value="false"/&gt;
      &lt;/compiler&gt;
      &lt;compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4"
                type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"&gt;
        &lt;providerOption name="CompilerVersion" value="v3.5"/&gt;
        &lt;providerOption name="OptionInfer" value="true"/&gt;
        &lt;providerOption name="WarnAsError" value="false"/&gt;
      &lt;/compiler&gt;
    &lt;/compilers&gt;
  &lt;/system.codedom&gt;
  
  &lt;!-- 
      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.
  --&gt;
  &lt;system.webServer&gt;
    &lt;validation validateIntegratedModeConfiguration="false"/&gt;
    &lt;modules&gt;
      &lt;remove name="ScriptModule" /&gt;
      &lt;add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
    &lt;/modules&gt;
    &lt;handlers&gt;
      &lt;remove name="WebServiceHandlerFactory-Integrated"/&gt;
      &lt;remove name="ScriptHandlerFactory" /&gt;
      &lt;remove name="ScriptHandlerFactoryAppServices" /&gt;
      &lt;remove name="ScriptResource" /&gt;
      &lt;add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode"
           type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
      &lt;add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode"
           type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/&gt;
      &lt;add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /&gt;
    &lt;/handlers&gt;
  &lt;/system.webServer&gt;
  
  &lt;runtime&gt;
    &lt;assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1"&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/&gt;
        &lt;bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/&gt;
      &lt;/dependentAssembly&gt;
      &lt;dependentAssembly&gt;
        &lt;assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/&gt;
        &lt;bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/&gt;
      &lt;/dependentAssembly&gt;
    &lt;/assemblyBinding&gt;
  &lt;/runtime&gt;
  </code></pre>
  
  <p></p>