I've learned a few things in the last few hours because I've got another animation with hair dynamics rendering. The strand hair item included with Poser 6 called Jessi Short Blonde...it has four components, Left, Right, LeftLite and RightLite. DO NOT MAKE A DYNAMIC FOR ALL! If you do, they whack each other around and cause chaos. I suspect you should either use the two regular OR the two lite, but NOT BOTH! I may try to run the Jessi Hair Toss render over with new settings if I can squeeze out the time in the next few days. Another tip to all who enter the world of dynamic hair: turning off "cast shadow" for the hair elements speeds things up, as you might imagine. ::::: Opera :::::