IK refusing to follow target around Z axis The IK have set up does not follow the target around the Z axis. I am using an Empty as the IK target. You can download the blend here.





 

Each bone except the bottom one has the following IK constraints;



And the bottom bone;



What have I done wrong?
I deactivated the x-axis limits for the three end bones and the odd error clears up as shown below.





I re-enabled the limits but changed the range from -90 to 90 for all 3 bones and tested it with some fairly exaggerated movements of the curve and the animation seems to behave sensibly.