Sorry for starting so many new threads, but I'm basically diving headlong into A:M this weekend, and I've taken all next week off to submerge myself in it. So bear with me.
The trouble I'm having right now is that when I start a new action, a few bones (thigh and calf) are missing from my rig. When I lift the foot, or pull down the pelvis, the knee bends properly. So it is seeing the bones and the model is responding properly, but I cannot see them, nor select them to manipulate them. I could assign coordinates mathematically, but that would be a nightmare to have to do that every time, and I like to be able to see the skeletal structure as I animate. All other bones appear and work properly, but the leg bones are invisible. Is there a setting I can change? I don't have them "hidden," they just automatically become hidden in the action window. I can see those bones in the modeling window just fine.