Redux source 5065 key issue

{
if (_sessionFactory != null) return false;

var configuration = new NHibernate.Cfg.Configuration();
configuration.Configure(Environment.MachineName + ".cfg.xml");
configuration.AddAssembly(System.Reflection.Assemb ly.GetExecutingAssembly());

_sessionFactory = configuration.BuildSessionFactory();

return true;
}





this is where the key is found database checks out any help would be nice

An unhandled exception of type 'System.Collections.Generic.KeyNotFoundException' occurred in NHibernate.dll

If I'm not mistaken when you build/rebuild the project it deletes Iesi.Collections.dll and Iesi.Collections.xml