I think you may have misunderstood us. We (or - at least I in my case) use only *one* skin with all elements needed on it. It works fine for all other parts, excluding one. I tried it several times, over and over again, it didn't work so i gave up. However, this mistake never appeared again, don't know whether it had something to do with the model or not. Just wanted to point out that things like that *can* happen in MED - although the user did everything correctly.
Greetz!
Alan