Cycle error while not cycling - random and unpredictable occurance

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  09 September 2012
Cycle error while not cycling - random and unpredictable occurance


There's something wrong with my rig.

I have a stretchy setup via translation and it all works fine. I also have forearm and upper arm joints to distribute twist from the wrist to the forearm and elbow to upper arm.

But that's when it begins. If I connect anything into the forearm or upper arm joints, sometimes it is fine, other times it cycles, most times it waits until I move the arm THEN undo, THEN it gives me a cycle. This includes utility nodes and/or constraints.

But there is no cycle at all. Why is this happening? Even when I remove the constraint/connection it STILL occurs. I'm only constraining/connecting rotateX.

// Warning: Cycle on 'L_wrist_IK.translateX' may not evaluate as expected.
// Warning: Cycle on 'L_arm_scale_MD.outputX' may not evaluate as expected. 

^ This occurs when placing an orient constraint from the L_wrist_JNT (bind) to L_forearmB_JNT (or A), moving the arm, then hitting undo.

L_wrist_IK is the wrist from the ik chain. L_arm_scale_MD is the node that divides the distance by the global scale to make rig scaleable.

I will provide a screenshot and upload my scene; model is removed to make file smaller:

  09 September 2012
file wont open for me.
-Sean Kealey

CG Director / Character TD

  09 September 2012

Was able to fix this with some help, it was just incorrect parenting of locators that worked for my scale setup but obviously not for translation.

  09 September 2012
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