I beg to differ, ERC works fine in Poser 5 and 6, including matching JCM in the clothing. It actully works better than in Poser 4 and PP. It isn't really a bug either, it is just being used in ways that weren't thought of by the creators of Poser, but it still follows the original rules. Posable upper head? Gee, let's suppose you had a base mesh that you changed around, except for the head, the original head was fine, and came in both a hi-res and low-res version. However, the head was slightly mis-shapen, with rather a too-big upper head, sort of an "egghead" effect. You could fix it either by morphing, or, more nicely, by having a new, "ghost" upper head that could be scaled and even rotated in "x". Nifty, what? ;-)