Hello again, this should be very simple to answer......
If I assign my (attached) rule file ScatterRule02.cga to a simple polygonal shape, it does what I expect and scatters instances of my tree model across it.
If, however, I assign splitRule.cga, which is intended to divide the shape in two and then scatter trees over half of it (by importing the ScatterRule02.cga rule file, nothing is generated.
What am I doing wrong please? (please)