Hi, I have a situation. I start simulation of a robe with constraints near the belt area. Simulation happens at -55 frame. However, when I, come to frame 1, because of dynamicConstraint ( component to component ) the result is undesired. I'll send the file if needed. But off hand. is dynamicConstraint needing any treatment so that it works for all frames ( minus to plus. ) BRgds, kNish