Estimados, buenas tardes. Estoy haciendo unas pruebas con un proyecto personal 
y cuando guardo un dato sobre la base de datos me tira la siguiente excepción.
Podrá alguien darme una mano. Acá les mando la excepción.
Muchas gracias.
Javier
System.Web.Services.Protocols.SoapException: Server was unable to process 
request. ---> System.TypeInitializationException: The type initializer for 
'Nested' threw an exception. ---> NHibernate.Cfg.HibernateConfigException: An 
exception occurred parsing configuration :The element 'hibernate-configuration' 
in namespace 'urn:nhibernate-configuration-2.2' has invalid child element 
'mapping' in namespace 'urn:nhibernate-configuration-2.2'. ---> 
System.Xml.Schema.XmlSchemaValidationException: The element 
'hibernate-configuration' in namespace 'urn:nhibernate-configuration-2.2' has 
invalid child element 'mapping' in namespace 
'urn:nhibernate-configuration-2.2'.   --- End of inner exception stack trace 
---   at NHibernate.Cfg.XmlSchemas.ConfigSettingsValidationEventHandler(Object 
sender, ValidationEventArgs e)   at 
System.Xml.Schema.XmlSchemaValidator.ValidateElementContext(XmlQualifiedName 
elementName, Boolean& invalidElementInContext)   at 
System.Xml.Schema.XmlSchemaValidator.ValidateElement(String localName, String 
namespaceUri, XmlSchemaInfo schemaInfo, String xsiType, String xsiNil, String 
xsiSchemaLocation, String xsiNoNamespaceSchemaLocation)   at 
System.Xml.XsdValidatingReader.ProcessElementEvent()   at 
System.Xml.XsdValidatingReader.Read()   at 
System.Xml.XPath.XPathDocument.LoadFromReader(XmlReader reader, XmlSpace space) 
  at System.Xml.XPath.XPathDocument..ctor(XmlReader reader)   at 
NHibernate.Cfg.ConfigurationSchema.HibernateConfiguration..ctor(XmlReader 
hbConfigurationReader, Boolean fromAppSetting)   at 
NHibernate.Cfg.ConfigurationSchema.HibernateConfiguration..ctor(XmlReader 
hbConfigurationReader)   at NHibernate.Cfg.Configuration.Configure(XmlReader 
textReader)   at NHibernate.Cfg.Configuration.Configure(String fileName, 
Boolean ignoreSessionFactoryConfig)   at 
NHibernate.Cfg.Configuration.Configure(String fileName)   at 
NHibernate.Cfg.Configuration.Configure()   at 
Persistency.NHibernateSessionManager.InitSessionFactory() in 
C:\Users\Public\Documents\Proyectos\Papiro\Persistency\NHibernateSessionManager.cs:line
 54   at Persistency.NHibernateSessionManager..ctor() in 
C:\Users\Public\Documents\Proyectos\Papiro\Persistency\NHibernateSessionManager.cs:line
 37   at Persistency.NHibernateSessionManager.Nested..cctor() in 
C:\Users\Public\Documents\Proyectos\Papiro\Persistency\NHibernateSessionManager.cs:line
 46   --- End of inner exception stack trace ---   at 
Services.BookService.Save(Book book) in 
C:\Users\Public\Documents\Proyectos\Papiro\Services\BookService.cs:line 94   at 
Services.WebImplementacion.AltaLibro(Book book) in 
C:\Users\Public\Documents\Proyectos\Papiro\Services\WebImplementacion.cs:line 
15   at EnlaceDB.Main.AltaBook(Book book) in 
C:\Users\Public\Documents\Proyectos\Papiro\EnlaceDB\Main.asmx.cs:line 28   --- 
End of inner exception stack trace ---                                       

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