Odd Leg Angle

Hi,
In this file the left leg always twists to this weird position. I can fix this by setting -90 to Pole Target in the IK constraint panel, but this change doesn’t survive when I save/quit/reload - the leg is always twisted.

Any ideas what I can do to fix this?

Thanks
https://dl.dropboxusercontent.com/u/13211994/AsianManUpload.blend


Pole Angle is Key framed. Delete Key frame.

Also remove Deform option from knee target bone and Ik bone.

Thanks ridix