We are doing the following on version 8.8.0 site and it is working.

public static IEnumerable FindAll()

        {

            var store = typeof(T).GetStore();

            return store.Items();

        }

However, when we attempt the below on version 9.12.0, I am getting a NullReference exception when I call items.ToList(). The strange thing is if I do items.Count(), it actually returns the 3 items saved in the store.

public static IEnumerable GetItems()

        {

            var store = typeof(CalHIINCommitmentAgreement).GetStore();

            var items = store.Items();

            if (items != null)

                return items.ToList();

            return new List();

        }