I can confirm that I am still receiving the following error in the "Hello World", "DestinationVideo" and "Diorama" Demo's in Xcode Version 15.0 beta 4 (15A5195m): Expansion of macro 'ObservationTracked' produced an unexpected 'init' accessor The "HappyBeam" Demo is the only one that currently runs.

It would be nice and helpful to receive the "Stylized Clouds.usdz" as being used in the getting startet tutorial!