After adding a new constraint,the whole rig is broken I'm trying to rig the wing of a bird (I'm following the piero training course of the CG Cookie) and a strange behaviour is happened when I added a new constraint to the bone called "CTRL_armPole". It seems that the whole wing is broken. I add two videos,the first one is a little piece of the tutorial that I'm following,and the second one is what happens to me :

1: little piece of the tutorial  

2: what happens to me

how can I fix this situation ? thanks.
change the pole angle in the IK constraint to have it pointing toward the pole target, you have to eyeball it.

Quadripedal Rigging: Twisted limbs

https://vimeo.com/171279647

The reason why the person in the tutorial didnt need to do it was probably because their bones had a different role angle (select bone in edit mode Ctrl R and rotate it) or the bones have a different rotation mode (select bone in pose mode, go to properties editor->bone->transform->rotation mode)