UNITY: ArgumentNullException

I am working on a project in Unity and am simply trying to replicate TestScene3 with the Skeleton Viewer, which I have successfully done in the past. However, since recent Orbecc updates in the past couple of months I have run into this error in my project file, which previously worked. Unity keeps throwing the ArgumentNullException, apparently unable to find any bodies that the Astra camera should be storing…:

Originally the Astra sample scenes had stopped working as well but I got a license and inputted the license key after the initialization in AstraController.cs. Now my sample scenes work but my own project scene, which is simply duplicating the sample scene, is still broken and returns this ArgumentNullException…any ideas as to what it going on?