Blender Manual 2.6 says in regard to the follow path constraint:
“(We) need to keyframe Evaluation Time for the Path. Select the path, go to the path properties, set the overall frame to the first frame of the path (eg frame 1), set the value of Evaluation time to the first frame of the path (eg 1), right click on Evaluation time (slot), select create keyframe” and likewise for the end frame.
But I have found that keyframing fails. I want a rigged character to walk along a curved path - either Bezier or Nurbs. I apply the Follow Path constraint to the armature - it is accepted. But when I try to keyframe the ‘Evaluation Time’ slot, a cryptic Error message turns up:
“F-curve with path = evaluation time (0) cannot be keyframed. Ensure it is not locked or sample. Also remove F-modifiers.”
Could someone kindly explain what on earth this message means?