I worked through the Fluent NHibernate tutorial at http://wiki.fluentnhibernate.org/Getting_started and the project compiles fine.
However, I am getting a runtime
I feel like an idiot for this but at the end of the day the mapping problem was caused by the fact that I had named the project FluentNHibernate (in my own defense it was in a SAMPLES folder) but that was causing the mapping to fail.
Internally Visual Studio defaulted the Assembly name to FluentNHibernate and that was causing the runtime error. Renaming the assembly to ConsoleApplication fixed it.
Seth