In Poser 4, there are several work arounds, the Null figure being one of them. In Poser 5,There is no morph to morph cross-talk, but the readScript function happens at a vulnerable level. You need to prepare each character -solo- save it as an "injected" cr2. Then in the render scene, bring in the pre-prepared characters. I would bet that readScript would cause problems with multiple figures in P4 also. I don't know if the Null will fix this. The code in Poser 4 or 5 was not written to accomodate the more sophisticated ERC functions that we are doing now. Because of this, scenes must be planned. Doing multiple characters can cause problems if not done correctly. Poser has a function - that in P5 takes care of these problems - it is: Spawn Morph Target. If you make a character be a single unique new morph (a morph for every group, that is) and this morph has its own name, you can use it with V1 or V3 (depending on which one you are using) and not have any other shape morphs in there. Poser 4 also has this function. The difference is: The JCM will still be open to cross-talk and this must be planned for. But Poser 4 will allow JCM in conformed clothing to be automatic because there is cross-talk. This is what we have to live with - with Poser code, it is not anything DAZ can do anything about.