Hi Dan
Thanks for the reply.
My Null is layer 5, so I put the following at the top of the expression.
seedRandom(4,false);
I then proceeded to delete the layer that I don’t want (to clean the project up) which is the 4th layer in the comp. When this is done, the camera jumps again.
I should add that I have some position keyframes on the null as well as the expression.
Thanks again.