Unable to build the sample code for WWDC RealityKit 2 session

I had no problem building and running. But I have noticed this week that sometimes by default a project intended for iOS 15 Beta and/or Xcode 13.0 Beta may by default open in Xcode 12.5 and I'll get all types of errors until i realize that i'm in the wrong version of Xcode. Now I generally right-click on project files and specific 'open with Xcode-beta'. Are you sure you're opening it up with the correct version?

Thanks for your reply. Yes I'm running Xcode 13 beta

I just built this for Xcode 13.1 by applying the following diffs (make sure you're building for a device, not the simulator - the code doesn't compile for the simulator, which isn't mentioned in the README - FB9181536):

diff --git a/Underwater/Octopus.swift b/Underwater/Octopus.swift
index e447a32..7a99708 100644
--- a/Underwater/Octopus.swift
+++ b/Underwater/Octopus.swift
@@ -82,7 +82,7 @@ struct OctopusSystem: RealityKit.System {
         let scene = context.scene
         for octopus in scene.performQuery(OctopusComponent.query) {
             guard octopus.isEnabled else { continue }
-            guard var component = octopus.components[OctopusComponent] as? OctopusComponent else { continue }
+            guard var component = octopus.components[OctopusComponent.self] as? OctopusComponent else { continue }
             guard component.settings?.octopus.fearsCamera ?? false else { return }
             switch component.state {
             case .hiding:
diff --git a/Underwater/Scattering.swift b/Underwater/Scattering.swift
index 0883bdb..db3aa47 100644
--- a/Underwater/Scattering.swift
+++ b/Underwater/Scattering.swift
@@ -127,8 +127,8 @@ extension Entity {
         if let animation = try? AnimationResource.generate(with: FromToByAnimation<Transform>(
             from: transformWithZeroScale,
             to: transform,
-            duration: 1.0,
-            targetPath: .transform
+            duration: 1.0
+//            targetPath: .transform
         )) {
             playAnimation(animation)
         }