https://www63.zippyshare.com/v/xnKMHxWy/file.html
here my actual rigging state.
I think it is something wrong with the shine.L and shine.R bones. i changed a little bit the hip bones and after that the calves are a little bit better but the problem is still there.
maybe is difficult because the character is a 3d scanned character from real-life. there are more assymetries. thats why it not worked to rig it with that mirroring thing.