I faced this same problem. Clicked on ParticleEmitter and it crashed. Diorama crashes and wwdc23 session 10083 is not workable on the the platform. Please take a look and plan to address it asap. Platform is: MacBook Pro (2020) -- 2 GHz Quad-Core Intel Core i5 -- Intel Iris Plus Graphics 1536 MB MacOS: 14.0 Beta (23A5286i) -- Sonoma 14.0 Beta (23A5286i) -- Before this I tried on MacOS Ventura 13.4 and 13.4.1 both as well, faced same problem launchd.log realityComposerPro.crashReport