The script uses a "hack" some of us have known about for a couple of years, problem is that Optitex had a hissy fit when the "hack" was revealed and "demanded" DAZ do something to stop it, so a block was added to 4.7 that stopped the "hack" as is, but with a little knowledge of DSON it was easy to get around, they have since removed the block in 4.8 and 4.9.

The "hack" is still a sore subject over there, and most threads/posts mentioning it tend to vanish, or at least all of mine do.