Thanks Dan!
the parented layer is actually a pre-comp.
So I should have said that I need help linking a light to a parented pre-comps 3d position.
I tried modifiying your suggestion to
L = thisComp.layer("Plane red ball");
L.toWorld(L.anchorpoint)
It tracks but the alignment is off.
Basicly, I'm trying to create a Indiana Jones Map
and this is what I have done:
Create a path, attach a solid and orient along path.
Parent a pre-comp'd Plane layer (which tracks perfectly).
My issue comes when I try and parent a light to use as a emitter for particular.The alignment shifts. I need the alignment perfect as it needs to leave a trail from the tail of the plane.
I know I'm doing something wrong but can't figure it out since my plane layer is perfect.
Here is just the project with plane with track file if you can have a quick look: 1.2mb
http://finalphasedvd.com/download/Jones%20Map%20Track%20Help.zip
Any ideas?
Thanks again!