Wall Properties with Python 2.0.1 R19

I have a working graph in R18 and D1.3.3 to get properties of the wall like layer materials and core, but none of the information is being produced in R19 with D2.0.1. I assume this is a change in the API, but wondered if anything else knew of a better or correct way to get this in the current version.

Thanks in advance.Python

I was able to make this work with opening an earlier version of the graph. The graph I was using had been corrupted.