I was hoping to load individual files to keep the memory footprint down. But it seems that when I load the one large integrated file it works so I’m missing something from the individual include list.
are you using the latest 4.0.2 version ? There have been some changes since the first 4.0 release including changes related including scheme of sources libraries.
Please download the latest package. And in case of Tree definition you will need to include the following libraries to enable basic functionality: