Dude, you really have to do some work on your own. The following info was in the thread I gave you. Read it. And if it still doesn’t work then re-read the entire thread again until you get it.
Well you are getting this error because the layers that make the box have to be the topmost layers in the composition. You could place the null below the box layers, and then turn back on the expressions that had the error but I have a better solution:
1 – Make sure you are working in a square pixel comp
2 – Apply the expressions to the layers and make the box
3 – Select All the box layers and press “ee” to bring up all parameters that have expressions applied
4 – Select these parameters and go to Animation > Keyframe Assistaant > convert expression to keyframes
5 – Now parent all your layers to a null, add light(s), camera(s) and you are good to go.
~Colin
Cheers
Roland Kahlenberg
https://www.broadcastGEMs.com – Adobe After Effects project files
https://www.myspace.com/rorkrgbspace