I\'m new to NHibernate and have been trying to get up and running with it, Fluent NHibernate and NHProf using NuGet. After reading this article (http://gurustop.net/blog/2011/0
NHibernate 3.2 comes with its own mapping configuration (Conform). FluentNHibernate only works with NHibernate 3.1 as a result of this, you can't use 3.2 (I had the same problem). So you'll have to manually download 3.1 and reference that unless NuGet allows you to use 3.1 directly.
Your other option is to remove all references to 3.2 and then install FluentNHibernate from NuGet, then the dependency resolver will kick in and automatically include NHibernate 3.1 for you.