I'm having a bit of trouble with the Walk Designer in Poser 6.  When I had Poser 4, I was able to use it with Michael 3 for basic run or walk animations.  With my new project and upgrade to P6, I usually use Mo-Caps (mostly from ES)... unfortunately I really can't find any motions for running, therefore I hope to just use the built-in run cyles in the Walk Designer.  The problem is, now that I have P6, these don't work with M3.  When I apply a run animation, for example, Michael's knees stay locked, and his heels appear to be super glued to the ground (his feet bend, but they don't MOVE).  His upper body is in the motion, but not quite the lower half.

Is there anything I can do?  I do have a custom run motion from ES, but it's kinda jerky and VERY apparent when the cycle loops; thus creating much unnecessary attention to the animation.  BTW, I tried ticking LIMITS on and off as well as Inverse Kinematics, but the result is always the same.

Thanks for the help!