I am using Blender 2.49b, OSX and imported the model from MakeHuman 0.9.1RC1. Is this tutorial for a different version of Blender? I ask because I'm striking differences in the Kinematics section of Part III
To start this TAB into edit mode and select the tip of Index_1.L. Using SHIFT-S, send the cursor to the selection.
Next, go to front view (NUMPAD-1) and add a bone (SPACEBAR->Add->Bone).
It will be quite large once you add it. You should notice that Blender defaults to keeping the tip highlighted when you add the bone. Grab it and move it down some keeping it outside of the rest of the finger.
The next step will make it an IK controller. Switch to pose mode and select that new bone. Shift-select the Index_1.L bone. Press CTRL-I and select "To Active Bone". We now have our first constraint set and our first IK-Chain set. You should notice the Index_1.L bone change color to yellow and a yellow line gets drawn indicating where the IK chain length is.
I'm having quite a few problems when following these and comparing what I end up with with what's described and pictured.
When I Press CTRL-I, it inverses the bone selection so the new bone and Index_1.L aren't highlighted but all the rest in the Armature are. So how should I set this constraint? What I have figured out for adding constraints when in pose mode is this: F9 > Constraints. Click "Add Constraint" and select "IK Solver". When I do this, it's not Index_1.L that turns yellow but the new bone instead. I have tried to go further but just get further off track.
Up till this point has gone really well but I've been through this part a couple of times and just can't get it to work. If anyone has tips for this I would really appreciate it!