i had this issue all day today. i tried all kinds of things so not 100 percent on how i fixed it but, my project was on icloud and the framework project that gave me the issues was on my local drive. i moved the framework to the folder adjacent to my project on icloud and it worked. i might of had the framework paths wrong and not looking into the original framework location but the paths are very hard for me to grasp :P

I submitted the 'missing project' as a website issue and apple responded to me and told me to post here. To my dismay I saw this was posted here a couple of times with no help from Apple. I attempted to port my scenekit game to realitykit a couple of years ago and it was very difficult. I'd really like to see this example.

it is finally live. https://developer.apple.com/documentation/realitykit/bringing-your-scenekit-projects-to-realitykit

i made a post on bluesky when the video aired just asking into the void and today the developer replied. I was very surprised.

Id say it depends on the complexity of your game and features you plan to use. I have a 7 year old scenekit game i just started to port over to realitykit for learning reasons and i keep hitting wall after wall. i have a rockband clone with a 3d selection menu. This menu can have 10s of thousands of songs. Scenekit handled this no problem but in reality kit i cant get the same performance and i havent even loaded textures like cover art. just learned that it doesnt do material instancing so each object is a draw call. I spent two days trying to find out how to do it then there is swiftui. As soon as i add a couple of textviews on top of my scene cpu usage spikes even when idle. Scenekit has spritekit overlays that can do very complex rendering with little overhead. lastly i cant wrap my head around changing scenes. Scenekit scene presentation and transitions are easy to understand, with realitykit seems like i need to empty the scene and repopulate it Losing my music menu state and having to reload all the assets again. With scenekit i can elegantly transition back to the selection menu just as i left it. i wouldnt worry about a game in scenekit breaking in future OSs. Realitykit has a long way to go and imo scenekit is way more flexible. Im quite shocked how slowly it was progressed. scenekit matured just a couple of years after introduction.

i'm in the process to porting my game to realitykit and i looked at this subject again. it's been 7 years since i started and there is still no new solutions. ai was able to reiterate all my problems and suggested libraries that no longer exist like SwiftOGG chatgpt put together a sample project with the vorbis libraries and it didn't work just like when i attempted. it looked promising tho. anyway, this is insane that the file format used so much and there is no native swift support.