V4.1 is like an upgrade for V4, and if you really want, but it's too late is Alice from Aery Soul. I really love her, and trying to use her more into my artwork. But back to the Q with V4.1 you can use both V4 and V4.1 items. If the is not right no one told me and I have been using them with no problems.

David J Harmon
davidjharmon.com