The file attached above is an example of the sort of thing I mentioned in my last post, ERC to help with high heels. It adds three dials to the Body actor, FootBend, yBODY, and NoToeDigt. The NoToeDigt dial attempts to help help when shoes with long pointed toes dig into the ground on the backwards motion of the legs.

How to use.
HeelHelper can be applied either before or after the walk cycle has been applied, but its dials should remain set at zero untill after the walk cycle has been applied. Make sure the character, NOT a shoe, is selected when you apply HeelHelper. After applying the walk cycle advance the animation a few frames untill the thighs are lined up approximatly side by side, use the yHip dial to raise the figure, use the FootBend dial to set the shoes parralel to the floor, if necessary readjust the yHip dial. Advance the animation and see if the toes dig into the floor, if so find a frame where the toe dig is at its worst and use the 'NoToeDig' dial to correct this.

If you need to reapply the walk cycle remember to zero the HeelHelper dials first. It's also a good idea to zero the dials  first if you are going to save the figure back to a palette.