I can confirm the issue is back on visionOS 26.3. Thanks for the workaround.

I'm having the same issue, looks like we can't use BackgroundAssets with Apple hosted Asset Packs with the simulator at all?

Is there any workaround to make it work in the simulator by any chance?

So it nows run on device for some reason (same code I posted) but this doesn't work at all in the simulator. It should be added to the documentation that it's not supported there. And maybe a way to check for support on the current platform?

I had to remove the post because it contained sensitive data that I totally missed. I'll post the solution on the forum when I find it.

Issue of .usdc files not showing up in RCP folders has been fixed in Beta 5. Cannot say if that fixed the issue of some .usdc files not loading at runtime, I'll need to revert to my old codebase to try and doesn't have time at the moment.

I filed a ticket FB19361717. You can find an example asset in there, and also FYI .usdc files do not show up anymore in the Reality Composer Pro folders so you cannot drag them in the scene. I attached pictures in the ticket too regarding this.

This project worked fine in visionOS 2.5 & Xcode 16.4. We do have a custom process to load the bundle though, we build our package with a custom script: #!/bin/sh rm -rf ./.build xcodebuild \ -scheme RealityKitContentPackage \ -destination 'generic/platform=visionOS' \ -configuration Release -derivedDataPath ./.build \ clean build rm -rf 'TGV INOUI/Assets/RealityKitContent/RealityKitContent.bundle' cp -rf .build/Build/Products/Release-xros/RealityKitContent_RealityKitContent.bundle/ 'TGV INOUI/Assets/RealityKitContent/RealityKitContent.bundle' rm -rf .build and load it this way: var realityKitContentBundle: Bundle { let bundleURL = Bundle.main.url(forResource: "RealityKitContent", withExtension: "bundle")! return Bundle(url: bundleURL)! } The scene is then loaded like this: environmentEntity = try! await Entity(named: "TGVM", in: realityKitContentBundle) We discovered today that the issue is coming from the fact that our 3D files are in the .usdc format, when using .usdz things are working as inteded. But .usdc files were supported before, was there any change in visionOS & Xcode 26? To be clear this project worked fine before on visionOS 2.5, we're updating it to visionOS 26.

I'm still having the issue in the beta 3: SpeechAnalyzer: Input loop ending with error: Error Domain=SFSpeechErrorDomain Code=10 "Cannot use modules with unallocated locales [en_US (fixed en_US)]" UserInfo={NSLocalizedDescription=Cannot use modules with unallocated locales [en_US (fixed en_US)]}

I have the same issue, did you find a fix?

I reported this issue to some of apple devs already, also intersted in a solution if there is one!