Fluent NHibernate can not auto create mappings for a dynamic assembly

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I am working on a legacy code base that builds some of its entities on the fly.I'd like to be able to add these entities to my auto persistent model using AddEntityAssembly like this :

var model =new AutoPersistenceModel()
                .AddEntityAssembly(Manager.RunTimeEntityType.Assembly)

When I try to build a configuration using this model I'm getting a FileNotFoundException which confuses me because the assembly is already loaded to AppDomain.CurrentDomain and I can build a new object of RunTimeEntityType using Activator.CreateInstance

Do I have to do something extra ?

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OK. I found out what the problem was.Actually NHibernate had to load this assembly from a different folder that was not introduce as part of the references path.So all I had to do was to add this folder to app.config :

<runtime>
  <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <probing privatePath="my folder name" />
  </assemblyBinding>
</runtime>

Here there's a question about the same issue.