Collection cannot be null exception when using HashSet in NHibernate?

Aha. I thought I had stripped away all the Fluent conventions, but apparently there was a collection convention setting it to .AsBag(). Works as expected once the convention was removed, although it seems like a bug (or at least unexpected behavior) that the .AsSet() was not overriding the .AsBag() convention.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.