Hi,

I'm new to nHibernate, this is the first example I'm trying to do, but I can't make it work.

I made a simple aspx page with some fields (Name, Surname, Address), then a class representing that (Person).
I also made a mapping xml and put the nhibernate configuration in the Web.Config.

I load the page, but after I hit the button "Save", the following error appears:

"The located assembly's manifest definition with name 'NHibernate' does not match the assembly reference."


I don't know what's that.

I have organized the Solution in two proyects:

The Web Proyect, and one called Entities.

The entities proyect has the link to the nhbiernate.dll.
And only a file with the Person class.

The class has setters and getters.
And the following method:

<code>

public static void Guardar(Persona _persona)
{

// Configuracion de nHibernate
Configuration cfg = new Configuration();

// Creo una session con la transaccion para que usa nHibernate
ISessionFactory factory = cfg.BuildSessionFactory();
ISession session = factory.OpenSession();
ITransaction transaction = session.BeginTransaction();

session.Save(_persona);
transaction.Commit();
session.Close();

}
</code>


When that method is triggered, the error appears.


What should I do?


Thanks a lot !!!

This is a standard .net exception when your app refers to different versions of the assembly during compilation and during run-time. (e.g. app is being compiled with NH 0.8.4 and running with 1.0.1).

Look for NHibernate.dll files in the project (in bin folders) and check if versions are equal (you can do it even with windows explorer, - go to file properties and look for version tab)

When I see the Properties in the Visual Studio .Net (2003), it says:

"Version: 0.8.0.0".

Then, when I go to /MyApp/Bin/

The NHibernate.dll also says: "Version: 0.8.0.0"


What could be happen?


I also try using the 1.0.1.0 version of nhibernate, but it says the same.


Any idea?

You have an old copy of NHibernate.dll around. Delete all NHibernate.dll's you can find, and try again.

Check Out ur GAC in c:\windows\Assembly. Check out if there is any reefernces added to Nhibernate in there. If it exsits check the version there. Ur Applicaion might be picking up the dll from here. Make sure only One version exsits, the one u want to use. Delete all other nhibernate dlls from here. This should then Work. If u want to use different application with different versions of Hiberrnate u need to create a Key mapping. Let me KLnow if this Helped

This article describes very well how to debug this kind of stuff and proved more than usefull to me:
http://blogs.msdn.com/suzcook/archive/2 ... 57120.aspx

Thanks!