After Parenting bones model goes wacky in "Pose" mode

I am following a tutorial (link above) but I have come across a problem at: (13:25) in the video. In “Edit” mode you’re asked to “Parent” the following bones to the “Stomach” bone. So I select:

  • Arm_upper_L
  • Arm_upper_R
  • Leg_Upper_L
  • Leg_Upper_R

then lastly select the “Stomach” bone, then select (CTRL + PKey > Keep Offset).

The Problem
After I do this the bones are parented to the stomach bone and everything looks fine “Until” I select “Pose” mode then the model goes wacky like the image below.

I am trying to figure out “why” it is doing this. If anyone can help me I would appreciate it. Thanks.


.blend file here

Attachments


pressing ctrl z resets the model to its default pose but once you try to do anything it goes back to that messed up pose so, to fix it press ctrl z to get back to the default pose. go into object mode. select the armature, press X

now delete all the vertex groups associated with the armature and start over.
sorry. thats the only fix i can find.

Change the Pole Angle on your Left Leg’s IK from negative 90 degrees to positive 90 degrees to sort this out.


seriously? thats all it took? lol
well thats easier than restarting!

Yeah. That kind of wonkiness usually has something to do with the IK settings being off. At first I thought the IK might be pointing at the wrong target, since it looks like the right leg is pointing at the left foot, but the constraint panel shows Lower_Leg_L pointing at Leg_IK_L with pole target Knee_L, so that wasn’t it. Only thing left is the pole angle.

@Paint Guy, you’re going to need to do something about that chain length 0, too, if the tutorial hasn’t mentioned it already.

Off topic but your rig is doing some crazy hiphop dance moves there… maybe you should trademark it.

Orinoco - Change the Pole Angle on your Left Leg’s IK from negative 90 degrees to positive 90 degrees to sort this out.

Thanks Small Troll and Orrinoco. Orrinoco your answer solved it thanks.

One more problem. So in pose mode I grab the stomach bone and pull it down, but the character doesnt squat vertically but arcs back when it squats. Do you know why it is doing that?

It probably has to do with the chain length of your IK chains. A chain length of zero means the IK solver tries to go all the way to the beginning of the parenting chain, instead of stopping short. This can result in very strange behavior. Most IK chain lengths should be two: the lower leg and the bone just above it, or the lower and upper arm bones. That’s just an educated guess, though, since I haven’t taken a second look at your blend file.