Just published our web app onto our customer's new web server for the first time and received an invalid NHibernate configuration error. Discovered it was due to the database connection string in the app.config file - it was still holding the value for the database server here in the office.
Discovered reference to SlowCheetah from Hanselman and went straight to NuGet to install the package. After checking out the proj file from our source control to allow SlowCheetah to do its thing and restarting Visual Studio, there was still no Add Transform menu option when right clicking the app.config file.
Managed to get it to show by downloading the extension from the msdn visualstudiogallery website and installing.
