nhibernate mapping: A collection with cascade=“all-delete-orphan” was no longer referenced

Question

I am having some probs with my fluent mappings. I have an entity with a child collection of entities i.e Event and EventItems for example.

If I set my cascade mappin

Answer 1

Check this SO post: NHibernate: Delete a child record from the parent collection

The comments to the accepted answer has similar issue.

You may want to try removing AsReadOnly for your EventItems to check if that's the cause.