Hold on... I just released the Version 4.5 X-Fets didn't I?
Well, considering everything that has been going on, I wasn't going to leave them out of the equation.
You get the Omega Advanced / ADV update which works on both the Skin and the UV Top including materials support so now setting your breasts is a breeze!
Also, I have spent some time reworking the skin mapping and now it is far superior to how it was before.
As with the current updater situation, it is best to pop in store and use the redelivery service.