IK robot arm

Hey I am trying to create a robot arm that points to a point that moves along a circle, like the tutorial on Bongo 1. I got fairly far along but there is a disconnection somewhere because the arm does not move. Can someone please take a look at this and see what could be causing it. Thanks.

‘Follower’ shouldn’t be an element of the chain, but an independent moving object.
Secondly the pivot of ‘Follower’ is moved away from the point itself (somehow). When you join them the point will follow the track nicely.
Finally you should constrain the ‘End point’ to ‘Follower’.

Here is the result: My Robot arm 001.3dm (276.4 KB) . The system is not yet completely fail-safe - the arm is to long for the point to completely follow the circle.
Good luck.