I'm trying to put ik just for the legs on my character. When i have one leg on the character and move her up and down, the ik works fine. then when i add an ik to the other leg the previous one gets all screwy but the new ik works fine...

i have the iks from both the ankles attached to the root hip joint. I can't figure out what would cause this, is it something i may have done before setting up the character? Maybe i need to detach the skin?

any suggestions?
thanks in advance