At last, I solve it.
I change the Application Pool to Classic. 🙁 

The WebCatpcha need some special folder like the UltraChart do to create images?

Thanks Paul but no, isn't work. 🙁
 

Web form:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Testform.aspx.cs" Inherits="ControlDeJuegosWS.Testform" %>

<%@ Register Assembly="Infragistics4.Web.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" Namespace="Infragistics.Web.UI.EditorControls" TagPrefix="ig" %>

<%@ Register Assembly="Infragistics4.Web.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb" Namespace="Infragistics.Web.UI" TagPrefix="ig" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml"&gt;
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
</head>
<body>
<form id="form1" runat="server">
<ig:WebScriptManager ID="WebScriptManager1" runat="server"></ig:WebScriptManager>
<div>
<ig:WebCaptcha ID="WebCaptcha1" runat="server" Width="250px"></ig:WebCaptcha>
</div>
</form>
</body>
</html>

 

Web.config:

<?xml version="1.0"?>
<!--
Para obtener más información sobre cómo configurar la aplicación de ASP.NET, visite
http://go.microsoft.com/fwlink/?LinkId=169433
-->
<configuration>
<configSections>
<sectionGroup name="dotNetOpenAuth" type="DotNetOpenAuth.Configuration.DotNetOpenAuthSection, DotNetOpenAuth.Core">
<section name="messaging" type="DotNetOpenAuth.Configuration.MessagingElement, DotNetOpenAuth.Core" requirePermission="false" allowLocation="true"/>
<section name="reporting" type="DotNetOpenAuth.Configuration.ReportingElement, DotNetOpenAuth.Core" requirePermission="false" allowLocation="true"/>
<section name="openid" type="DotNetOpenAuth.Configuration.OpenIdElement, DotNetOpenAuth.OpenId" requirePermission="false" allowLocation="true"/>
<section name="oauth" type="DotNetOpenAuth.Configuration.OAuthElement, DotNetOpenAuth.OAuth" requirePermission="false" allowLocation="true"/>
</sectionGroup>
<section name="infragistics.web" type="System.Configuration.SingleTagSectionHandler,System, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
</configSections>
<appSettings>
<add key="fileUploadPath" value="~/Logos"/>
<add key="maxFileSizeLimit" value="4194304"/>
<add key="bufferSize" value="16384"/>
<add key="allowedMIMEType" value="*"/>
</appSettings>
<connectionStrings>
<add name="XXX" connectionString="Data Source=XXX\SQLEXPRESS2012;Initial Catalog=XXX;Integrated Security=True" providerName="System.Data.SqlClient"/>
</connectionStrings>
<infragistics.web styleSetName="Claymation" styleSetPath="~/ig_res" enableAppStyling="true"/>
<system.web>
<httpModules>
<add name="IGUploadModule" type="Infragistics.Web.UI.EditorControls.UploadModule"/>
</httpModules>
<httpHandlers>
<add path="IGUploadStatusHandler.ashx" verb="GET" type="Infragistics.Web.UI.EditorControls.UploadStatusHandler"
validate="true" />
<add path="WebCaptchaImage.axd" verb="GET,HEAD" type="Infragistics.Web.UI.EditorControls.CaptchaImageHandler" />
</httpHandlers>
<compilation debug="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="Infragistics4.Web.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.Documents.Reports.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.Documents.Excel.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.Documents.Word.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.Documents.IO.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.Web.jQuery.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.Documents.Core.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb"/>
<add assembly="Infragistics4.WebUI.WebHtmlEditor.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7DD5C3163F2CD0CB"/>
<add assembly="Infragistics4.WebUI.Shared.v13.1, Version=13.1.20131.2069, Culture=neutral, PublicKeyToken=7DD5C3163F2CD0CB"/>
<add assembly="System.DirectoryServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
</assemblies>
</compilation>
</system.web>
<system.net>
<defaultProxy enabled="true"/>
<settings>
<!-- This setting causes .NET to check certificate revocation lists (CRL)
before trusting HTTPS certificates. But this setting tends to not
be allowed in shared hosting environments. -->
<!--<servicePointManager checkCertificateRevocationList="true"/>-->
</settings>
</system.net>
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
</system.webServer>
<runtime>
<!-- This prevents the Windows Event Log from frequently logging that HMAC1 is being used (when the other party needs it). -->
<legacyHMACWarning enabled="0"/>
<!-- When targeting ASP.NET MVC 3, this assemblyBinding makes MVC 1 and 2 references relink
to MVC 3 so libraries such as DotNetOpenAuth that compile against MVC 1 will work with it.
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />
<bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />
</dependentAssembly>
</assemblyBinding>
-->
<assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
<dependentAssembly>
<assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral"/>
<bindingRedirect oldVersion="0.0.0.0-2.1.10.0" newVersion="2.1.10.0"/>
</dependentAssembly>
</assemblyBinding>
</runtime>
<dotNetOpenAuth>
<messaging>
<untrustedWebRequest>
<whitelistHosts>
<!-- Uncomment to enable communication with localhost (should generally not activate in production!) -->
<!--<add name="localhost" />-->
</whitelistHosts>
</untrustedWebRequest>
</messaging>
<!-- Allow DotNetOpenAuth to publish usage statistics to library authors to improve the library. -->
<reporting enabled="true"/>
<!-- This is an optional configuration section where aspects of dotnetopenauth can be customized. -->
<!-- For a complete set of configuration options see http://www.dotnetopenauth.net/developers/code-snippets/configuration-options/ -->
<openid>
<relyingParty>
<security requireSsl="false">
<!-- Uncomment the trustedProviders tag if your relying party should only accept positive assertions from a closed set of OpenID Providers. -->
<!--<trustedProviders rejectAssertionsFromUntrustedProviders="true">
<add endpoint="https://www.google.com/accounts/o8/ud&quot; />
</trustedProviders>-->
</security>
<behaviors>
<!-- The following OPTIONAL behavior allows RPs to use SREG only, but be compatible
with OPs that use Attribute Exchange (in various formats). -->
<add type="DotNetOpenAuth.OpenId.RelyingParty.Behaviors.AXFetchAsSregTransform, DotNetOpenAuth.OpenId.RelyingParty"/>
</behaviors>
</relyingParty>
<provider/>
</openid>
</dotNetOpenAuth>
<uri>
<!-- The uri section is necessary to turn on .NET 3.5 support for IDN (international domain names),
which is necessary for OpenID urls with unicode characters in the domain/host name.
It is also required to put the Uri class into RFC 3986 escaping mode, which OpenID and OAuth require. -->
<idn enabled="All"/>
<iriParsing enabled="true"/>
</uri>
</configuration>

 

Don't work to me.
Any other suggestion for IIS 7.5?