I got the latest source and compiled. When using the newly built NHibernate assembly, I started receiving runtime errors that my mapping documents could not be compiled.  I’ve tried to track down the problem but get inconsistent results and the problem doesn’t always occur. 

Here is the error:

NHibernate.MappingException: Could not compile the mapping document: GameFly.Retail.EncryptionTranslator.Domain.Mappings.Account.hbm.xml

       NHibernate.MappingException: Could not compile the mapping document: GameFly.Retail.EncryptionTranslator.Domain.Mappings.Account.hbm.xml ---> System.InvalidOperationException: There is an error in XML document (0, 0). ---> System.InvalidProgramException: Common Language Runtime detected an invalid program.

       at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializerContract..ctor()

          --- End of inner exception stack trace ---

       at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)

       at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle)

       at System.Xml.Serialization.XmlSerializer.Deserialize(TextReader textReader)

       at NHibernate.Cfg.XmlHbmBinding.Binder.Deserialize[T](XmlNode node)

       at NHibernate.Cfg.XmlHbmBinding.MappingRootBinder.Bind(XmlNode node)

       at NHibernate.Cfg.Configuration.AddValidatedDocument(NamedXmlDocument doc)

          --- End of inner exception stack trace ---

       at NHibernate.Cfg.Configuration.LogAndThrow(Exception exception)

       at NHibernate.Cfg.Configuration.AddValidatedDocument(NamedXmlDocument doc)

       at NHibernate.Cfg.Configuration.ProcessMappingsQueue()

       at NHibernate.Cfg.Configuration.AddDocumentThroughQueue(NamedXmlDocument document)

       at NHibernate.Cfg.Configuration.AddXmlReader(XmlReader hbmReader, String name)

       at NHibernate.Cfg.Configuration.AddInputStream(Stream xmlInputStream, String name)

       at NHibernate.Cfg.Configuration.AddResource(String path, Assembly assembly)

       at NHibernate.Cfg.Configuration.AddAssembly(Assembly assembly)

       at NHibernate.Cfg.Configuration.AddAssembly(String assemblyName)

The interesting thing to note about the exception is the part where it mentions that the common language runtime detected an invalid program.  This occurs when I run tests with TestDriven.net or VSTS Test.  Restoring my previous version of the nhibernate 2.0 alpha, which looks like it was source from 11/15/2007, resolves the problem and everything runs as normal.  Not really sure where to look for the problem but let me know if I can provide more information.

This can occur with a simple mapping file like this. 

<?xml version="1.0" encoding="utf-8" ?>

<hibernate-mapping

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

          xmlns:xsd="http://www.w3.org/2001/XMLSchema"

          namespace="GameFly.Retail.EncryptionTranslator.Domain"

          assembly="GameFly.Retail.EncryptionTranslator.Domain"

          schema="Customer.dbo"

          xmlns="urn:nhibernate-mapping-2.2">

          <class name="Account"

                   table="Account"

                   mutable="true" lazy="false">

                   <!--IDENTITY-->

                   <id name="Id" access="nosetter.camelcase-underscore" column="intAccountId" type="System.Int32">

                             <generator class="identity" />

                   </id>

                   <!--PROPERTIES-->

                   <property name="Password" column="vchPassword" type="AnsiString"  length="50" not-null="true" />

          </class>

</hibernate-mapping>

Thanks,

Jesse