A possible work-around would be to return to the old posable clothing methods. That is, don't conform the clothing at all; copy the base figure's pose to it using the pose dots. ERC should then work. Note that you can conform the clothing while you're setting up your scene, but once that's done, un-conform it and pose copy instead. Posable clothing also gives you more "tweak-ability" if the fit is troublesome. As a recent Poser 3 user, I can recommend it. ;-)